^^
@K1stpierre
well to explain how Wade got his powers. They injected him with something that was to get his mutant genes ready as apparently everyone has them, but they just don't always appear. But it has been established in other Marvel movies that the mutant gene/powers don't start until the person is under some major stress. That is why they were torturing Wade, to try to get the mutant part to activate. Basically, it either works or the person dies. Obviously with Wade, it worked but not only giving him unlimited healing powers, it mutated his skin as well. To try to keep him a "slave", besides the control thing, Francis lied to him that he could heal the skin part.
and yes Francis basically lied about curing the cancer too, because he doesn't know what power Wade would have. It was just an excuse to get Wade to give permission for the experiments.