Is Wolf "Good" Not really, lemme go over this bit by bit.
His recovery: Very easily edgehogged, both side B and UpB have a VERY small sweetspot box, arguable the smallest out of all the characters. This is the aspect you have to master in order to have a chance with Wolf. That's just getting onto the stage. If you by chance miss the ledge (Like, over shoot it) then you are going to get punished for it, the lag after UpB and SideB is horrible and just screaming "Punish me!" You can't make any mistakes here, or you're going to be punished/KOed.
Next aspect: His fall speed, His fall speed + his weight makes a bad combination. Or rather, a good combo for other characters. A LOT of characters can combo Wolf into oblivion, things like Falco's Utilt, Fox's Utilt, Peach's Dair, CHAINGRABS, all this crap can be done for longer on Wolf simply because of his fall speed and weight. This means that a lot of characters already have a percentage advantage if they hit you with such moves/grab you. Which means Wolf is often at a disadvantage already. Although, not every character can do this, but a lot can =/
Chaingrabbing: Wolf can be chaingrabbed a lot, automatically putting him at a disadvantage,a lot of characters can do it on Wolf. Oh well.
Next, his matchups. His matchups against the higher tiered people are horrible. The only matchup I feel like I have a chance in is against maybe Snake and GaW. But both of those have Wolf at a disadvantage. MK absolutely pwns Wolf, 7:3 easily. Falco pwns Wolf, due to 70% chaingrab. DDD can freakin' INFINITE Wolf. Marth simply outspaces Wolf. And Rob can camp Wolf hard (Also, Rob can gimp Wolf like crazy). This is what's going to get him to Mid tier, his matchups. They're simply not good.
The thing that makes Wolf Wolf, his Fsmash, is rather punishable, as this is more of a damage dealing move than a kill move, but if you use it correctly, it shouldn't be punished.
THe last thing: Wolf has trouble killing. His only reliable kill move is the Dsmash, and when you use that a little too much that can get a little predictable. But even if you save it for the kill, it can be difficult to get a hit in. Especially when you're donw a stock and they have 100 plus percent, they know a Dsmash is coming and can expect it. So getting kills for Wolf is a pain in the butt.
But other than that he's a good character, I don't think he'll make it to high tier, but he won't be low or bottom.
All that being said, I think he has potential, and a lot of it.
If any of you are wondering, yes I main Wolf, yes I've tried to main other characters, but Wolf chose me, I didn't choose Wolf, so I'm stuck with him.