Xavier should be able to win this without to much hassle. Wanda has never (that I recall) showed the ability to even utilize her telepathic abilities on another character without the use of her magic in the form of her red tendrils touching people. I doubt she can actually use her telepathy on Xavier without making those connect with him. Which means he would have "plenty" of time to shut her down. And even if she resist, I don't imagine her having the energy to attack him physically while he is attacking her mentally.