If you must know
1 he's the first robot character (megaman is the second)
2 he's the first real world character (our world)
3 he's a retro and this guys are locks (and from evidence plausable Mach rider could be the 5th but I'm doubtful about It though)
4 believe it or not he got in the same marth and ness got in the series
5 he's extremely loved in usa and more importantly japan so tht favors him (even though mac prove it might be equal this time)
6 R.O.B moveset is easy to implent due to robotic movements
So basicly the only reason rob coud be kicked is because of time contrast
1. What does that matter?
2. What does that matter?
3. Who says they are locks? At this point in time, it's still just as possible that Ice Climbers, G&W, etc could still be cut. I hope not, but they aren't
locks. Nobody's a lock until they're confirmed.
4. Huh? I can't make out what this one says, sorry.
5. So was/is Mewtwo, but he was cut from Brawl. Sure, it was probably just time constraints, but the point is that being loved doesn't save you all the time.
6. So what if it's easy?
I'm not saying that he's extremely likely to be cut, I'm just saying that he's one of the more likely ones. If I were to take the list of remaining Brawl vets that haven't been confirmed yet, he'd almost always be towards the top of the "To Cut" list.
IMO, any leak that doesn't have a true curveball is immediately dismissible for that reason alone, unless Sakurai bucks the trend this time out.
So basically it's entirely plausible. It's not like we know for a fact that the 'trend' will continue (since three games isn't really enough to pinpoint any so-called patterns or trends), so it's very possible that our curveball is just WFT. So I wouldn't dismiss a leak just because the rest of the characters aren't curvy.