If you are talking about the normal MGP fork, then FID, if you are talking about the Nitro fork, the Nitro fork will be stornger.
Billie Rainbow bent his Nitro fork, this is what he said: I bent the steer tube, you will never bend/break the legs.
He also said that on the Nitros they where making them even thicker :|! (the steer tube that is).