That's no way to prove anything! Besides, you've got it all wrong: Santa Claws is a catgirl. ;p
So, here's a good way to prove who's right for the job. In one of my many posts I edited in a large image of a catgirl wearing the red suit. If you can find that image, then you're undeniably cut out for the job: remember, Santa has deliveries to make, and that means knowing where to make those deliveries. Treat the image as if it were a person you were to deliver gifts to, and deliver. Whoever can make the "delivery" first must be Santa Claws.
Go get 'em, tigers.
(Don't worry, it's not in a place that's too obscure. In fact, in a way, it's fairly easy to find. It just depends on how you try to find it. Wink, wink, nudge, nudge; you know what I mean?)