"My character shouldn't struggle anymore against Luigi thanks to his nerfs."
Ugh.
Exactly the same thing
everyone said about Diddy after the first nerf patch. You should survive me being the only one to bring this up as of yet easily.
A lot of this is debatable.
It's pretty generous to say that Diddy doesn't lose to pikachu or Rosalina. Pikachu overpowers him in neutral and edgeguards him mercilessly, while also being hard to cleanly hit for combos. Rosalina has better damage since she can't be reliably comboed with luma out, and none of Diddy's moves really launch luma well besides monkey flip kick which isn't safe on shield. She also kills way earlier and way easier.
I'm with you on Shiek but we are pretty much the only Diddys who think this apparently.
So his matchups aren't really as amazing as a lot of people think, especially when characters like Mario, Rosalina, Luigi, are common. If we also say he loses to Shiek which a lot of people do, and pikachu which I definitely think is true he has a lot of problems at the top level. Maybe this will change but right now the results reflect this.
Mario, fox, and maybe Sonic have better spreads then him at this point IMO in addition to the characters you said. Although I'm not really as impressed with Sonic since the nerfs.
Edit: I foresee we will be agreeing to disagree in the near future.
Problem with Pikachu actually is: who outside of ESAM is effectively using Pikachu? I am pretty damn sure that ZeRo's Diddy would beat ESAM for example. So am not really taking Pikachu especially serious at this point... At least, outside of Customs. Custom Pikachu is a whole different beast.
Luma isn't invincible or anything, and F Air launches Luma far enough to follow up to something at the very least. F Tilt also isn't too bad, and if they are separated, a Monkey Flip Kick in the face is not something Luma appriciates. Yes, before when Diddy was close to desperation in getting in the kill, I'd argue that Rosalina was a lot harder than before. But I personally never saw the matchup as worse than 50-50, and I am actually still inclinded to think Diddy vs Rosalina is at the very least still 55-45.
A lot of stuff that applies to ZSS also applies to Rosalina I feel. Tall, lightweight, easily punishable for Diddy, just watchout for projectiles and we good.
So to me, I only think that the "problematic" matchups are Mario, and maybe Luigi, who's a lot easier to deal with than Mario anyway. Sheik isn't much of a problem because we can actually really make good use of the fact that Sheik also struggles with landing the KO thanks to rage. I also think that most won't agree with us on this, but I think it's only a matter of time before it'll show of. If ZeRo did so well against Mr.R's Sheik when Diddy was CLEARLY on his WORST, that shows a lot of potential.
If you want to agree to disagree, I'm fine with that. Am just being optimistic about my character, and with the recent buffs, I think he'll do quite well in tournaments in the future. Has ZeRo actually spoken about the recent Diddy buffs as of yet? I know ZeRo doesn't think too well about Diddy currently (as he thinks / knows that Sakurai nerfed Diddy especially to hinder him) but am sure he's gonna play the monkey more.
Only time will tell.
EDIT: Also, I heavily disagree that Ness and Olimar are uphill battles for Diddy. Sure, they are harder because of the nerfs, but we beat both solidly before. I honestly don't see them as being anything worse than even. Villager also isn't too bad. And R.O.B. going even against Diddy whilst being such delicious combo-food for Diddy isn't something I personally find too believable.
Again, I know I'm probably optimistic, but so where the Wario / Pacman players before remember?
The Hoo-Hah Nation shall rise again!