Definitely depends on what type of riding you plan on doing.
If you ride in comps all the time, and are smooth/experienced or have a lot of cash to spend, go with the xtp.
If you just ride more than you do comps, are not smooth or are heavy, don't have a lot of cash, go with the Pitbull, its more durable/heavier, and has a longer warranty.
Both are nice bikes and look cool.
Who do you like more: Vincent Hermance or Neil Tunnicliffe?