Your "what if" reminded me of what happened three years ago in the weekly doubles event I attend. I hit two aces that season, and in both cases I had a 13-14 year old kid as my partner (two different kids). In the first case, I split it with him, and you would have thought he won the lottery (his half was $60). His reaction alone was well worth it.
In the second case, after the round I was preparing to split it with the kid, and the guy running it told me my partner had not paid into the ace pot, so I didn't split it with him. I kind of felt bad, but fair is fair - if you don't pay in you shouldn't be rewarded. Of course, he paid into the ace pool every time after that.
Point is, it shouldn't matter whether your partner is more or less capable of hitting an ace. And, as weak as I might think it is to not split, sizing up your partner before the round and then deciding not to split based on your assessment of their lack of skill is downright slimy...
I'm also baffled by those who say "well, I'd offer my partner something". Why? Either you are of the belief that it is all yours or you split it. Sure, it's your money so you can do what you want with it, but why give them anything? Guilty conscience? Then you should have agreed to split in the first place.
Let me be clear - I will not try to talk you into a split, and when I ask if you split before the round (which I always do) and you say no that's just fine. But doubles is a partnership, and I believe in a partnership we share the rewards from what happens while we are partners as long as we invested equally in the game...