Quick math from newbie:  SR 72lvl no dyes in BW set and BTB6 = 6400 HP/CP pool... lets say Modoy has at least some parts enchanted to +4/5/6 (i doubt he has full +6 set tho but i could be mistaken) so add there like 250-300 HP from bonus (wild guess ofc).. so we have around 6600-6700 base pool. Healing potions could heal him in this fight theoreticaly up to 2200 +- (dont ask me how, find this trick yourselves  ) Right now i could stop but.. lets continue: If he has +4 CON (-5 STR?) dye