In their last few fights, both Roy Nelson and Shogun Rua have withstood some heavy punishment. Both have shown to have granite chins and a will to keep fighting on. Obviously Roy has withstood some pretty harsh beatings from the hands of the champ JDS, and top contenders Frank Mir and Fabricio Werdum. Roy may also has some possible future opponents whom also pack some heavy leather in the form of Shane Carwin, Mark Hunt, Antonia Silva, and possibly Overeem. On the other hand you have Shogun Rua, who has shown unquestionable heart in the cage, but unfortunately also seems to have his best days behind him. In his last few fights he's took some heavy shots from the likes of JBJ, Brandon Vera, Alexander Gustafsson, and most notably, Dan Henderson. He also has some possible future opponents who've shown to have knockout capability in the form of Glover Teixeira, Thiago Silva, Rasdhad Evans, plus a couple rematches with Rampage Jackson and Lyoto Machida. So my question is, do you think either of these two run the chance of losing their capability to take heavy shots, and if so, who? Or do you think both will be able to maintain their granite chins?