Are you seriously saying that he's better than Lindelof in the air ?
Well, as
@ivaldo said, it's different when comparing a FB to a CB, but I've always been impressed with how Shaw's dealt with aerial threats, and, well, haven't with Lindelof.
Blind didn't fare well with us though. The FB role has traditionally been an easier role then the CB role. At CB every mistake counts, there's no room for mistakes and inches/physicality matters. If Shaw can't do the job as LB then I doubt he will do a better job as CB. In my opinion there's a bigger chance for AWB to transition as CB then him
Personally, I thought Blind was a fantastic CB for us, and was gutted José sold him.
As for AWB, I think his weakness in the air would be exploited centrally like Lindelof.