If the argument is Lee or Green is more athletic than Zac Taylor, then yes, both of them are. And Taylor was a better than both of them at this point. Taylor was a pretty unathletic player, but I still think he was better than even Ganz.
If the argument is Lee is more athletic than Green, that may be true, but I think Green has more tools to work with than Lee. Maybe he doesn't have as much practice experience as Lee but I think Green's cieling is much higher and that should be taken advantage of.