Spec differences between RPS Hawk 250 and Xpro Hawk 250

[Lee1991]

Hi everyone,
I am trying to decide on my first bike and I have narrowed it down to a few options but I am bumping into a few issues. I am trying to get the most power for the money and am getting some contradictory numbers from different sites. below are some of the number I have found, Let me know what you all think.

RPS Hawk 250 DLX - 16HP and 16.5 NM of torque
X-Pro Hawk 250 DLX - 11.5HP and 16.5 NM of torque

RPS Hawk 250 - 16.1 HP and 16.5 NM of torque (a few sites do show this to have 14)
X-pro Hawk 250 - 14 HP and 16.5 NM of torque

Also debating;
X-Pro Titan DLX - 16 HP and 16.5 NM of torque
and
BSR Raven - 16HP

My understanding is that the RPS and X Pro were the same bikes? why the difference in performance numbers?

Does anyone know which bike in this price range and category has the most power or what the real power specs are without the marketing Bull from the websites.

Thanks for any help and information you have.

Lee