>>12614188The fact that they're only really good in sun, as fire is a shit attacking type in the rain infested OU meta? Seriously, rocks aren't a problem for either of them, especially Arcanine, who can heal the damage off with morning sun.
>>12614299This. Again, rocks aren't what's keeping Victini down, but it's his linear play-style and good-but-not-quite-amazing stats. Mew has the same stats sans fire typing, with 10x the movepool and is in the same tier, if it tells you anything.
