Stop with this hands on lesson crap, he needed HELP and this is Itachi vs Nagato, Nagato only got hit by Itachi because he was busy with Bee and Naruto who won't be around in this fight.
ignore that "hopeless" Itachi biased Fans, THEY OBVIOUSLY DON'T SEE NARUTO AND BEE painted in the manga standing besides Itachi while Nagato is absorbed. And won't accept the fact that Nagato is a step above Itachi.
I will repeat myself again the only thing Itachi has on Nagato is Tsukuyomi, which Nagato is a sensor and can fight easily with eyes closed and use his sensing abilities to know what's happening.
at most i used to give 30% Itachi------- 70% Nagato,
but now that we know he is a sensor,
I would give Itachi 20%-25%------- Nagato 75%-80%
anyways both have killer shots and both have big chances.