Well right now it's assumed that the Camaro will have the 400 hp 6.0 LS2, but now that the Vette has upgraded to the 430 hp 6.2 LS3, I'd bet that the Camaro will have a version of that as well, which would put it about on an even plane with the 425 hp 6.1 SRT motor. Even with the LS2, though, I'd probably (as much as it pains me to say this) give the Camaro a slight edge, largely because the Challenger is such a porker at 4100+ pounds.

Of course if Chrysler decides to up the hp on the 6.1 by next year (or 09), then my take might be different.