Lmao even though 'sasugay' is a little childish, I still laughed cause I just wasn't expecting it lolll
But anyways
Why do people keep saying that we don't know the 8th gate's power yet? I think from what we've seen so far in the series, the gates just increase strength and speed in different ways. I'm guessing that the 8th gate is just a step up from the 7th gate we saw Guy using. But it's also a step up in repercussions also cause...you DIE
We all can say that the gates can increase taijutsu's power, both speed and strength wise.
And Sasuke doesnt focus on taijutsu now as much as Lee does. Sasuke is more of a long range attacker, he can't keep up with Lee in hand to hand combat if the gates, especially the 8th gate, is opened. With Lee's gates and his taijitsu skills, it'll be a long battle for Sasuke.
In the end, if Lee ever does have to use the eigth gate ( which we know he'll know how to in the future ), he could beat Sasuke. But not without losing everything.
Speed is everything here, and as long as Lee doesn't look in Sasuke's eyes, then Lee has a great advantage.
Edit: I'm pretty sure 8th gate Lee can dodge many of Sasuke's attacks. Ome of the most dangerous is probably the amaterasu, but it showed in the story that If you're fast enough you can dodge it ( How A dodged it that one time ). It's not like the attacks are gonna just hit you immediately. Don't quote me on that though.