With all due respect this is rubbish.
Is Lasley the player he was? No. He was still worth a starting place though over younger midfielders who can't eclipse a 38 year old Lasley, never mind Lasley in his prime? Yes.
By the way after the winter break Lasley started 50% of the matches (9 from 18) but managed to feature in 80% of our victories (4 out of 5). What does that tell you? In case you can't extrapolate it, I'll tell you - we were much better with him in the team than without.