I know what you mean but have a look at Lyle after Shavers dropped him. The fat lady had taken a deep breath and was about to exhale when that bell rang. Don't get me wrong i think Lyle would win more than he lost that's for sure.
Shavers packed the type of power that might make some wins a likelihood, in almost any series in which he partook.
Purely on a head to head basis, I'd say Lyle wins 70% of the time. No fighter is 100% sure against such a beastly puncher, haha