I think the predictor doesn't work properly on old retired, long gone fighters. With active fighters it seems to give more reasonable results.
True, Fury 70/30 Wilder which is fair, same with Wlad. Wilder-Povetkin, 50/50 Golovkin 70/30 Ward Oooh shots fired Kovalev 70/30 Ward Kovalev 70/30 Stevenson Kovalev 80/20 James Degale Kell Brook 50/50 Golovkin :yikes
It's ok for active fighters, but I suspect age is getting factored into retired / legendary fighters. Hence Duran/Lewis/etc. all doing really badly.