Samuel Peter has terrible defensive skills and has never been knocked down so I imagine he has a strong chin. Then again he has no neck, his head looks like it just sits on his shoulders.
If Toney was to fight Wlad it would look a lot like George Foreman vs Joe Frazier. Toney would get knocked out for the first time in his career. Toney is only 5'9" in height and lacks the footwork to get inside of Wlad. Wlad will just simply use his reach and height advantage to stay on the outside and throw bombs. I don't even think it would be a competitive fight, just a one sided beating by the hands of Wlad. Check out the fight with Foreman vs Frazier if you have not seen it.
His sexuality has nothing to do with him being a good boxer. It looks like he is gay based on those pics but once again this really has nothing to do with his boxing abilities and should be left in private.