I wouldn't say Davis is more athletic than Barkley. Barkley was a very good athlete. Problem is length. As a fan of a team with Gobert, you should know how much length matters.
Stockton historically struggled with large, athletic guards on defense. Add in hand check rules, and Stock would have a hard time guarding Westbrook. It's not that outlandish to say.
I'm curious what your thoughts on this matchup are (why did you vote for addictionary)?