I was watching a feeder and a young buck came out and acted very, very nervous. He actually ran away 3 times, each time coming back to the feeder. I thought maybe he sensed a larger buck in the nearby brush but when a larger buck finally did appear, he calmed down. I had heard Axis calling from the brush, too.

Have seen Axis run off WT's from a feeder on multiple locations. Seem to be quite a bit more aggressive than WT's

Depends on the whitetail.

I've seen mature / in rut 10 pt WT drive off a big axis buck and several more axis.

They also co-exist a lot (at least the does).

But, more often than not, axis will run off whitetail. Axis are bigger and more dominant, generally speaking.

I've seen both species run off one another. Maybe whichever one you are hunting for that day will be run off so be ready.

They’re the “axis of evil” lol

I've seen one group of whitetails run off another group of whitetails.

WT will generally yield to axis at a feeder. But I have never seen a fight between an axis and a WT.
I did watch an incredible throw-down between an sika and a WT. The WT had the upper hand, the sika was younger.

Not all deer are created equal. I believe it depends on "how big is the fight in the dog".

I've watched axis push whitetail out before but no conflict. The whitetail just sorta scoot out. Most of the Axis I see travel in pretty big groups. That may have something to do with it