Oh I don't know, it might because Metagross is a beast in competitive play while Magneton was doomed to UU until it got an evolution (which I'm pretty sure you hate anyways, so whatever. >_>)
My advice is to chill. the freak. out. No need to go off telling us we're not pokemon fans because you perceive the newer pokemon to be unoriginal. Believe it or not, there are people in the world with a different opinion than yours and its fully possible to like GenIII-GenV pokemon for any variety of reasons, including design and stats.
I'll give you a moment to let that sink in.
...
Now stop trying to impress your opinions on us because you'll just keep getting confronted like you have in this thread.