There's no way Diddy is top tier. He has too many bad match-ups and he has to many flaws to be exploited on. Although, with the rate the Diddy players are developing his metagame (single nana lock, ground tossing, tech chasing chaingrabs, peanutgun canceling, etc.) he is easily heading that way. Thanks AZ for not giving me any credit with the single nana lock >.>, here's a video of me doing with a mini tutorial in the description for anyone who wants a video (Note that I'm purposely taking this slow in the video but test have been done and you can't esape it)
http://www.youtube.com/watch?v=rd84oApOEoc
Also, this is inescapable when done correctly and is an infinite on walls.
I agree with OS that NL ROB is good but not Z0MG T0op T13er poownage. NL is an amazing player and no brawl mechanics better than he knows the character, which, I think is better than knowing the character.
Too soon to ban MK, metagame for most characters are starting to evolve, it's going to be interesting to see how this turns out.
Learn 2 play Diddy Pro Mk banners