Power, Torque. 9L vs 10L

This is the wall I've come up against. One guy says one thing and another says the oposite.

If

Power = Torque * RPM

Then

Serum is right and GriffinRU is wrong and the 9L has more Power

Or

GriffinRU is right and Serum is wrong and the 9L has less Torque.

I'm sorry to play you guys off eachother but the two statements can't be right unless the equation is wrong. I had a 9L which died and now I've got a 10L, I'm getting ready to replace it but I'm not sure which to get. Just thought knowing torque would simplify the purchase decision.