Bad marths are easy, theres this really good one that gives me trouble and I don't even know how to handle marth in teh first place
Most Marth's are bad. I can count on my fingers and toes the amount of Marth players that A. know what they are talking about for the most part and/or B. are good players. 60-40 Marth, he can zone very well, and also he has great aerials.
Marth Strengths:
-Great aerials
-Ftilt can destroy SH approaches
-Don't touch his shield or you'll get hit by a whale render
-Whale Render has invincibility frames for the first 5 frames, which can negate some combos.
-Good gimper
-Better Glidetoss (I think?)
Good Marth stages:
Delfino
and Battlefield are his best, don't use them against him
Diddy Strengths
-Heavier (which is sad...)
-Faster/less laggy smashes
-Projectiles
-Better recovery on block (meaning if you don't get gimped)
-Better throws
-Combos
-Bananas
Pretty much Diddy has to go NL and get into a rhythm after that Marth will have a hard time getting out of Diddy's banana combos and traps