I think the Top Three are exactly that, and Clemson isn't as bad as folks started to think after UNC. I see OSU as having all the pieces to win the NC, which doesn't mean they will of course, a lot of randomness happens in elite level CFB. I think OSU would be favored over any other team going.
LSU has given up a LOT of points obviously at times. Clemson of late has been blowing out mediocre competition. They have that one near miss. The field after that gets increasingly flawed. Duh.