Its JUST taijutsu battle, so no sharingan, no gates or am i wrong?
No you're not wrong, this is just about who is a better taijutsu user, and i answered that ( lee)
However, I viewed it in a actual fight, and played it out as such. Lee wins in taijustu hands down, until Sasuke activates his sharingan. Lee would then need to open the gates to beat him. Doing this would not take away the taijutsu battle, it only heightened it.
Sharingan is a doujutsu yes, but at the same time, it increases one's taijutsu for known reasons.
Opening the gates increases one's taijutsu as well; it increases one's speed, strength, and reactions.
Therefore i do not see reason to throw them out of the fight.