As much as I respect Serra's BJJ abilities, I think he's outmatched by Lytle in a few areas: Standup technique; overall natural size, weight, strength and height.
I really believe that Serra is in the wrong weight class. It's unfortunate because he doesn't get a good shot to showcase his skills.
Plus, let's imagine if Serra defeats Lytle. There is no way on God's green earth that he would be able to beat Hughes or GSP. Can someone say Guaranteed Domination? They should showcase Serra in the LW division now that it's starting to get some serious depth.