Nohoho posted Battle Poing ranking from August '08 until early January '09 a couple weeks back, and as you will see Daigo has been dominating ever since the game came out. So five to six months into the game, there are still a few Sagats ranking in the top slots, namely Mago and Ojisan boy but over all it's a good mix of characters.
The console release has been rumored to also use a Battle Point ranking system for online matches, although there is no way it will be as accurate as an actual arcade ranking system (no lag at the arcade for one). It will be interesting to see if the top North American names end up at the top of the list or if it will be a mix of somewhat familiar names with a bunch of new faces beating out more well known players.
Beyond that, one has to wonder if competitive players will opt to continue to play at their local arcade or if they will put just as much time into battling it out online. With so much information on the game floating around these days, that is really one of the last questions on peoples mind at this point: how seamless is the online play? If its just as good or better than HD Remix's then people will probably put a bit more faith in the online rankings, but we will have to wait and see.