Subspace Continuum has PvP. Yet it is intensity of a different kind (it's all about the physics, and the dodges, and your reaction-time). Did you know that when boosting, you can instantly let go of <Shift> to slow-down to your maximal non-boost speed?
Anyways, TW-fan here
But IMO - GW has the best PvP system out there...
I'm learning Super Smash Bros. at the moment (need to work on spacing, aggressiveness (I like to camp in just about every game in existence), and timing (too many milliseconds wasted that could have been spent re-positioning or follow-through with my combos). I also need to work on wavedashing, as I cannot chain my dashes consistently - nor dash-dance.