Nice that you managed to learn some of this stuff. Well, even though Mewtwo is a ridiculously powerful Pokémon that can OHKO most in-game opponents, that's still an alright spread for it in-game.
OK, cool. I have two others that are level 100 but I did not EV train them. I guess I'll find out how much of a difference this makes when my fully EV trained Mewtwo hits level 100 as well. He is a neutral nature if that makes any difference at all. I was overjoyed when I saw the result of loading up his SPATT after his first couple of level ups, but kinda got that sick feeling in my stomach after I filled out the rest of his EVs and he was only gaining the "usual" amount in SPATT afterwards. I was really looking forward to say.....500 something SPATT. What is the disconnect here? I was thinking he would continue to gain 15ish points to SPATT after I finished off his EVs, but I feel like I maybe just balanced them all out by finishing them. Is this the case?