^^Wouldn't surprise me. I think JDM engines do tend to be a bit higher compression. I know most of the rumored hp differences and whatnot go out the window when they get brought over here, cause I believe in Japanland they use higher octane fuel, and so once you put the lower octane US gas in, the hp gains become nullified.

None of those numbers look extravagantly high or low, so I would agree that they are either 100% accurate or pretty darn close.