Well I say it mostly because i see them as nothing more than cold, soulless, products of marketing. Abrams had no particular investment in the franchise. In fact, he even says so. Not to say they aren't competently made, just nothing remarkable about them.
Star Wars is Lucas' baby. Might be an ugly baby (the prequels, that is), but the man had passion, and a unique vision.
Ironic because those are the words that a lot including myself use to describe the Prequel Trilogy. Whereas ST at least had lots of soul, emotional connection and great characters. The PT was clearly trying to sell more product then anything. It's why he made Anakin a little kid, or always had little kids with lightsabers ect. The PT was much more products of marketing mainly just look at all the merchandising, and video game tie ins. And just everything else. Books, toys ect from 99-2005 there was PT stuff everywhere in every single capacity. Trek...they did some but not near as much. Actually I'd say Trek is far from that.
Additionally, all the old Trek films are not "remembered" by the general populace today like Star Wars. People don't remember any iconic scenes, or lines. Most had no idea who Khan was (even adults) when I watched STID. So it's not like JJ's films mean they are not good just because a lot of Trek films really don't have the memorability of Star Wars. Hardly anything does. Also the reason the PT is or will be possibly more remembered (some for its bad things) is the fact that it is tied into three of the most influential movies of all time. The OT will always be in the history books, and the PT is just linked to them, so ya they will be more easily recognizable.
Lastly making something memorable 20 years down the road does not make it any better. In 20 years if I sat down with someone that knew of both but had never seen either. I bet letting them watch ST09, and Episode I, most would probably prefer ST09 since it was a better made film in most eyes. So the point of this thing I don't think was "Which is more memorable?"
The question is which films are better, and to me (and many others it seems) that choice is somewhat clear. I again would say no way in hell would I ever call ST09 or STID soulless, that's the phrasing I use for the PT mainly because of the cardboard characters and lack of emotion. Whereas yes JJ was clearly not much of a Trek fan, and made Trek light for sure, but that does not take away from the films being well made, and entertaining stories.
I had no problem with them making Anakin a child because if you're going to tell the story of Darth Vader, starting him out as a child makes sense. I just wish Lucas had had the guts to make him a lot more angry and dark-spirited as a child, or at least let someone write the script who knew how to create real drama. Some of the set pieces worked - the pod race for example - but a lot of it didn't, at least for me.
The direction also had major issues. I read one critic say that you really have to work to get a *bad* performance out of Liam Neeson, but Lucas managed it.
I wasn't a huge fan of the second ST movie but I didn't have any issues with the performances or the direction, they're mostly with the plot. So they win out over the SW prequels for me.
A few things...
I don't think the prequels were soulless. Even in the wretched Phantom Menace I felt Jake Lloyd's good bye scene with his mother, Qui Gonn's death, Palpatine meeting Anakin for the first time. And while the romance was bungled in AOTC, I think Anakin's simmering anger and his grief over his mother was effective. And ROTS might have been hampered by Lucas shoving too much in and some clunky dialogue, but I still think Palpatine, Anakin, and Obi Wan all sold their parts and the tragic betrayal of the Jedi was very effecting.
I don't completely disagree that TPM had marketing on it's mind, but one could argue that the previous films (TESB and ROTJ) also did as well. And Trek '09 was heavily marketed as well. It was the first time I saw Trek toys and merchandise in stores like Target. I still regret not getting one of those phasers.
Star Trek never has had the marketing muscle of the Star Wars franchise, though it's odd though that there was no big marketing push for Into Darkness, no toys or anything that I saw anyway. Even the novelization came out a week or two after the film. (I can only imagine that the mystery surrounding Cumberbatch's identity might have played a role in at least holding back the novelization), but still the marketing push for Into Darkness was anemic.
Despite the negative grumblings about the prequels Star Wars has also made a lot of novels, comics, video games, toys, and etc. that help lessen the venom, IMO, that those films might still generate. And the crowning piece of that is 3-D The Clone Wars cartoon. It's perhaps helped capture a new generation of SW fans in a way the prequels didn't.
I've long thought that Trek could learn a thing or two from Lucas about marketing and building on their franchise. Trek '09 largely failed to build on its success and the general public's acceptance of the new crew and timeline. I think the dip in the domestic box office was a reflection of the Trek stewards not keeping that pump primed and not going more after the young audience.
If they were going the kid route I agree with you that they should've showed an angrier kid. I smacked my head when I saw in the deleted scenes a scene where Anakin is fighting another kid. I'm like, why in the heck did Lucas take that out? It was far more effective at foreshadowing than having a bunch of Jedi Masters pass judgment on Anakin, telling us he was dangerous without showing it.
Though I would've preferred that Anakin start out as a teenager. That way they could've spent more time developing his relationships with Padme and Obi Wan.