I think your misunderstanding what he is trying to say. He has stated that the SO6P is the strongest in naruto. However he doesn't understand why people who say things such as Itachi's Tsukuyomi rapes Tsunade because she has no counter to that move, but they automatically assume that the sage would even though there hasn't been anything shown from his fights.
I think it would be best to let this argument go though until more is known about the sage and his encounter with the Jūbi, like sir derp has said
I know what he's saying. And its completely retarded so I chose to ignore him.
Over half the people stronger than Itachi don't have hard counters to Tsukuyomi, but does that mean he can beat all of them? Nope.
-Hashirama and Madara have overwhelming long range attacks...eye contact is not an option.
-Naruto has long range attacks and clones.
-Sasuke can actually counter it.
-Nagato has overwhelming long range attacks.
-Kabuto has a solid Genjutsu counter.
-Obito has things that fight for him, and Kamui (Gedo Mazo, Bijuu)
Tsunade doesn't get raped by Tsukuyomi just because she doesn't have a hard counter. She gets raped because:
-She is a CQC fighter.
-Only CQC fighter who can effectively fight w/o eye contact is Guy.
-If she keeps on charging at him the chances of eye contact being established are high.
Rikudou is Juubi's Jinchuuriki. Obviously he has devastating long range attacks (Juubidama) Not to mention he mastered the Rinnegan so all of Nagato's moves are usable by him but much much stronger. But being the moron the OP is, this needs to be explained to him.
If not having a hard counter to Tsukuyomi meant that you would auto lose to Itachi, then Itachi would be able to beat almost everyone in NV.