As I've said, I think Davies is a better TECHNICAL keeper. It doesn't mean he'll perform worse than Wes. He's technically better at being a goalkeeper. You know, technical skills.
And yes, you're right. abilities do wain, but keepers less so. Much of it is mental. And he played for Barnsley and Stoke in the Championship.
Look, Wes has been brilliant for us, and the fact he's kept his place throughout would suggest to me that no one in training is bowling anyone over. He's not been great this season but he's been reliable. That is what I want to see from a keeper. Reliability.