Keep on making imaginary, straw-men scenarios, you're doing great. Speaking personally, I'm not defending Nintendo, I am questioning EVO's business practices. There is a difference, and if you don't see that, I think you have to question the emotional investment you have in this argument.
Nintendo did a dumb PR move, but it happened because EVO, who are one of the oldest and largest tournaments hoped to dodge Nintendo's legal department even though they knew that it could become an issue. They hoped that it wouldn't be, and it became one. EVO has relationships and sponsorship's from MadCatz, Capcom, WB Games, Atlus, Iron Galaxy, Marvelous AQL, among others.
Frankly, they should have known better. Actually, they did know better and did it anyway in the hopes that they would get away with it. And they ultimately did get away with it.