Looking back at Reeve as Superman, it's odd to me how long it took for superhero films to really take off. His portrayal is engaging and perfect, and the films did numbers at the box office.
I do not think Reeve will be topped, certainly anytime soon but possibly ever. Cavill is nowhere near Reeve, not as Superman and defnitely not as Clark Kent. Reeve is to Superman as Jackman is to Wolverine and RDJ is to Iron Man. They simultaneously perfected and redefined their characters. When I read the comics, I hear their voices in my head.
Superman and Superman 2 are fantastic films that have stood the test of time. I could watch them every week.