I think each cartoon had their strenghts and weaknesses. Animation of characters and demonstration of powers, music and voice acting i think are much better over any of the 1992 series. Although it did have a kick arse intro.
Animation in TAS was usually slightly off and when powers were used, people would well....glow. I know that they had limitations back then, but i much prefer the magnetic hum and magneto theme from evo to the gold glowing circles to TAS
TAS had some better storylines tying in with the comic and had lots of cool cameos which were always fun to see. I think EVO had a bigger cast and its secondary characters were quite well developed over the run. You may have only seen them little bits at the time but it was quite frequent where TAS episodes they perhaps only got one or two good moments.
I can watch TAS now but cringe at some of the dialogue (storm) and the screams that Jean, Rogue or Xavier use to produce are horrible, whereas Evolution seems a lot more grounded and better overall IMO. Towards the end of season 2, it really picked up and Mystique, Magneto, Rogue, Jean and Cylcops became great characters.
I say EVO wins but TAS is a classic and is what got me interested in X-Men, so something obviously worked with that cartoon, I like them both in their own right