Could go either way I think. Both guys are great on top, which can lead to an underdeveloped bottom game, so it would be jnteinteres to see what happens if/when one takes the other down. On the other hand if both are able to defend the TD and it becomes a striking match I think whoever has the better gas tank will win.
Khabib is a bad striker, he outstrikes better strikers when they are gassed out from defending his TDs/fighting off their backs, but his technique is bad. Lee is a pretty decent striker, but if he gasses that will be a great equaliser.