Okay so some Lee stats:
Speed-wise, he's pretty damn fast. Sasuke could blitz a group of Zabuza clones that were at least peak human. Haku can not only blitz Sasuke but he take care of of a group of Naruto clones all while a droplet of water is frozen in the air. Lee is explicitly shown as being faster than that, and then he takes his weights off.
Strength-wise, the guy puts his arm through the ground and drags up a tree root that was actually larger than himself. On top of walking around wearing weights that create decent craters (and make the arena tremble a little) when he takes them off. As a sidenote, Sasuke could KO a bear whose head was bigger than his entire body around this time and Lee can easily deal with him at this point.
With the Gates, he's visibly making sonic booms while moving and the force of him running kind of wrecked the arena.
He has no way to deal with the elementals and Lizard's mind powers can make things difficult for him. Morlun is also kind of out of his league given his BP feats.
He does rather well against the others though.