This thread reminds me of a thread in the Melee Mewtwo speficic board somewhere in 2005.
Anyways, I agree with most people here that think Ike should've been a more fast character. If anything, he should be a bit more like Roy, except a bit stronger and less speed and there you'd already have a whole different character as Marth, seeing as Ike's moves are mostly all unique (at least unique from Marth).
Ike's stats in FE9 where totally different from his Brawl incaration. In PoR, Ike's Strenght caps at 26 while his Skill caps at 27 and his Speed is maxed at 28. His Speed also has 5% more growth rate, so there's no way that Ike'll be stronger than he's fast in PoR. Hell, there are even reports of people complaining about Ike's medicore Strenght when he's unpromoted and even I admit I most of the times use the Energy Drop (raises Str+2) for Ike.
FE10 isn't out yet, and probably will not be for a while for me cause I live in Europe. But yeah, I've heard he's somewhat slower in that game but that still doesn't mean that he wouldn't be able to keep up with Bowser, which I here hear people complain about.
But anyways, Ike in Brawl seems to be REAL strong and REAL slow, which at first doesn't quite seems like the Ike in Fire Emblem but in a
cutscene from Fire Emblem 10 he's able to sweep away lost of soldiers with one swipe of Ragnell with almost no effort at all. Also, in FE9 you really never had to worry about Ike surviving if you would just impulsive send him into a group of enemy soldiers after promotion. Ike is also one of the stronger Lords in the Fire Emblem universe, and is often said to have a very unique but bland sword play style in FE9 by enemy characters.
So I think Sakurai went this route with Ike being the Rambo of Smash who could easly survive in wars (Free For All battles) but his swordmanship is a little too reckless for one vs. one fights. Also note that most mayor enemies/ rivals of Ike would also be translated as slow but powerful characters like the Black Knight and King Ashnard, so in Smash the player would assume that Ike won from them in their respective game by outspeeding them but still have the tremendous strenght to take them out in the first place, like Link (who seems to have avarage speed mostly in the LoZ games) being slow wouldn't make sence in the first place but after seeing his main nemenis Ganondorf being even (somewhat) slower it works out a lot better.
So having a slow Ike in Brawl still works in someway, but I personally would use that style for Ganondorf and giving Ike a bit more balanced stats but hey; I'm not making the game.