actually i used tusokiyomi once and i rested while i waited for like half an hour for you to responde. and in the manga itachi uses ameratsu like 8 times when he fights sasuke. and all that happens is his eye bleed =s. which mine did cause i said it was bleeding in are fightTobi = Right
Plus, Master of the Sharingan, you can't use amaterasu and tsukyomi like, 3 times in a row... Itachi has to rest for a while even after just using tsukyomi.
Plus it all doesn't matter; just training