Aren't Pikes discontinued? (this is why I'm trying to get some answers for the OP)
I'm fairly sure Pikes have a steel steer tube, Revelations have alloy; Pikes have lowers which are slightly (~200g) heavier than the Revelations too but I have no idea if it's got more material or it's simply a different material.
I look at it like this based on that and what floody said about the stiffness characteristics: the Pikes use steel lowers and steerer, and steel being more prone to flex, but generally being stronger, it kinda lines up with what I thought: Pikes being stronger - Revelations stiffer.
Stiffness and strength are two independent characteristics, personally I'd go for the Revelations as you'll have slightly more precise steering which translates into more control. Unless you're really pushing the limits I don't think you'd have a need for any more strength from a Pike - if they even are that much stronger anyway.