If you doesn't have the defensive wrestling to hang with those guys, then yes it could be a long night for Till. Maia is probably one of the scariest fighter you can go up against even if you have vicious stand-up, KO power and an iron chin IF you don't have the TDD to stop his TD and elite level ground game. However if you can defend, then even a mediocre striker with good cardio can stop him.
The Zangiefs of MMA can expose many weaknesses. At the same time though Wonderboy is like the Chun Li of MMA. She can pick you apart and can be difficult to get a hold of.