@Razh:
Wow, let's not get ahead of ourselves here.
There should be a lot of space between Luffy and an "admiral level", whatever that is. For example, Luffy/Zoro might be able to beat Fujitora and still be weaker than Akainu.
Never said that Luffy and Zoro were Admiral level.
But even so, Sabo and Luff's growths don't have to be the same. They aren't the same person. Maybe Luffy is more talented at fighting just like Sabo is probably more talented in literature (putting literature in the same sentence as Luffy makes me smile). I think they are close in strength now, with Luffy having advantages due to his versatility and range (that's assuming Sabo doesn't have a devil fruit).
Sabo was being portrait as being a little weaker than Ace when they were little and had the same age, so Sabo has to be above Luffy right now, just like Ace was going to be above Luffy after the two year time skip, Oda didn't showed us those numbers for a reason. I'm no saying that Sabo is better than Luffy but that Sabo is stronger than him right now.
–- Update From New Post Merge ---
@Raistlin:
Like last time? Oh wait no she didn't. She just saw Hakuba's movement just enough to turn a KO blow into a grazing one and being the only one to stand up since everyone including her attacker were down.
Look it was so obviously a plot set-up by Oda that he had to have Sabo pretty much justifying that it wasn't dumb luck but skill. Oda figured there'd be criticism and he tried to deflect it. But no way is he repeating that same cheap technicality in the final bout with Sabo raising his hand and calling for Ace to 'watch him'. I mean seriously, as Humanoid Typhoon showed in his post that's exactly the way Luffy set out to sea when he calleed for Sabo in heaven to watch him (back when he thought Sabo was dead, of course).
http://www.apforums.net/showthread.php?t=40610&page=9&p=3127054#post3127054
C'mon dude, we all hate her but she's going to win this tournament, just look at his chapter. The ring and Sabo going all friendly and shit. Beca for the win