I think what's interesting about SZ(in Grandmaster at least) is he hasn't gone through a million changes, but has been in different places tier wise throughout the game's life but mainly due to game changes and changes to other characters. Hell, Grandmaster actually got buffed in the 3/1 patch but he became worse tier wise because of the changes to other characters. And he is left pretty similar except for F1 being a massive buff, but it is the armor and stamina changes that help him more than anything once again.