My criteria is even simpler:
-Character takes the top 3 spots and 5-6 of the top 8 spots at national/regional tournaments on a consistent basis over several months.
There is then no guess work, its simply: look, it doesn't matter WHAT made the character do this, but this has happened.
Instead of: look, this could happen and it will cause this, but maybe this is happening and this will occur.
some feel Snake and Diddy run even, despite tournament results not reflecting this
Really? Last I checked Diddy Kong has more tournament wins against M2K than MK does. Actually, Diddy is the only character that has beaten M2K's MK, Azen's MK, and Forte's MK (multiple times). No MK can say they have accomplished that (M2K can't play himself), and no other character can say that. Ninjalink is like 30-2 against MK, but for some reason those 2 loses mean more than 30 wins. I guess Ken losing once to PC Chris at MLG NY in 2006 meant that PC Chris was a better player, despite Ken having only lost a handful of tournaments ever at the time (for the record, he won the next 2-3 MLG tournaments, including beating PC Chris).