Wow, fellas. All these years- err, past year and some change, we've thought of Fortress as the best OoS option in the game has been overblown.
Seriously, I know of very few attacks that Fortress OoS doesn't ****. Well spaced Wolf and DK BAirs qualify (as long as they don't get greedy) and the rumor is Peach CAN float at just the right height to DAir Bowser's big head, but those are the only one's I know of. Am I wrong here?
The difference is it's not easy to safely reach your opponent out of shield if they simply are good at hovering right in front of you without actually touching your shield. Whereas some other attacks out of shield actually pose an immediate threat to the sides (well, Bowser has F-air...but his jump is slow...and he's a big target. F-tilt/Jab isn't bad, but not safe in the range where you consider Up-B...). If you Up-B out of shield and your opponent was off to the side, at best you are going to get a weak hit on them. Bowser's grab range is not spectacular enough to really offset this.
That's what Jab cancels are for (see: what I've dubbed the MrEh Combo. Grab Release -> Jab -> Bowser Bomb). Jab -> Jabs are for when you need some breathing room and that deals, what, 10% on it's own I think? You don't want to get hit by too many of Bowser's Jabs, I know that much.
That decays to like 7% pretty quickly. And Bowser's Jab cancel is not all that good.
Also, you probably don't want to do Jab -> Bowser Bomb since that can be air dodged.
Let's think about this. Bowser is the heaviest character in the game, which translates to meaning, unless I'm mistaken, that Bowser's exit speed from any given move to being the slowest. Because of this, the Bowser player would have the most time of any character to DI the correct way, which is to the corners of the blast zones.
Now, once the Bowser player actually starts making his way back, it's important to point out that Bowser has one of the best movement speeds in the game. Only 8 characters get around off the ground faster, if memory serves.
Couple this with Fortess's invincibility and priority and you have a great recovery.
I could actually count the number of times I've been punished or edgeguarded on one hand, it's not very many, at all.
Recovery is easy in Brawl. I could count the times I get punished using Ganondorf's recovery on my hands too. Of course, this is probably in part due to people not knowing the matchup. Then again, most people aren't fully in the know about what to do against Bowser either.
Bowser is also a big target, so while he may move around fast, you don't have to be incredibly mobile to GET to where he is since he covers half the screen.
Attacking with anything except Up-B is almost out of the question for Bowser offstage without perfect prediction since his AERIAL ending lag is significant. Air dodging is also riskier for Bowser than most other characters, since offstage, this means falling longer, and we do know his air dodge isn't very good.
The invul frames on Bowser's aerial Up-B only matter against Sheik's F-tilt. Or there is a 1% chance they randomly save you on some whim the person EXACTLY messes up on that extremely narrow window.
If anything, Bowser has one of the most predictable recoveries in this game. I mean, look, I agree he doesn't have a bottom tier recovery like that of the PT, PK Boys, manly men, and tether guys, but those are the only guys he does better at in recovery. He gets good distance at least, but you have to be better than your opponent to avoid getting punished...and you're probably going to get punished if you're on FD or Smashville.