I think Tito outmatches Ken in this one. Tito did very well at the Abu Dahbi Combat Championships (ADCC). He shouldn't get caught in a submission.
Tito is an excellent MMA wrestler. He will put Ken on his back and cut him.
I think Ken would love to get back into the WWE, but if he loses, I don't see it happening. His stock will be diminished, plus he is up there in age. They already have legitimate "bad-asses" in Lesnar (NCAA champ.) and Angle (Olympic Gold). They really don't need the "Worlds Most Dangerous Man" anymore.