I believe characters like ROB, Pit, Wolf, and Toon Link are suffering from the same problem. Correct me if I'm wrong-
In the early days of Brawl, all four were recognized as great characters by public eyes- A material, we'll say. For some time they were quite popular and enjoyed the spotlight and attention. As time went by and this initial effect ran off, two things happened.
1. People discovered ways around their tricks and talents.
2. Few major breakthroughs were made in their games.
Today, if you look around, you see a good deal of animosity toward them (espically ROB) because of their early fame and lack of success in delivering on them. Having experiance with all four, I know the feeling too well. Once you get so far with them, you just hit a wall that can't seem to be gotten past. What next? What more can I do to improve? For me, this has very much been the case with Pit & Toon Link. Wolf who was once in my top 3, has lost his spot to Olimar & Lucario. Only in the last month or two have I started to pick up the pace with my ROB.
But I digress... I've heard that a lot of people have gotten over this with Pit- I'm still having trouble doing so, but not a big deal. And, before I finish, I will make four predictions. Just for the heck of it, honestly.
Wolf will probably be stuck under Fox from now on- no longer having the honor of being the 2nd highest space animal. He reminds me of Roy.... A very cool character that fans desperately wanted to see near the top of the tier list, but knew would never be. -Moment of silence for Roy-
I believe ROB will stay in A tier, never falling or rising enough to get out. People will continue to plead against this but its unlikely he'll fall far. Though if ZSS makes the 'Diddy Jump' *Sudden emergence as a tourney regular* ROB could be in danger. Assuming they know the match-up anyway.
Toon Link, I predict..... Well, I'd love to say he'll get into A tier, but I know its pretty unlikely considering how things look now. That spot most likely is reserved for ZZS or Lucario.
As for Pit.... You know, I don't have enough to give a decent prediction. My instincts tell me he's going to stay where he is, but part of me suspects he may fall soon. But, hey, if Kid Icarus Wii turns out to be true, he might get a sudden boost in rep. Anyone else want to shine some light on him?
Could be totally wrong, but its still fun to try to look into the future.