Probably the one with more over-rev will be faster & the one with more torque will be quicker of that scenario. Depends if the 65 HP bike runs out of steam, before the 70HP bike over-rev takes over. Def. the 65HP bike will be easier to ride.
With those two bikes I don't think it would be possible that they would have the same powerband.. The answer is: it depends!
No one freak out..... I agree with Ken.