I like it.

I have both around my place and I shoot them in about equal numbers. The valley around here is as low as 4800 feet and can be a bit over 5500 in some places. When they are eating the same things, I can't tell any difference between whitetail and mule deer.

When I shoot deer at the higher altitudes, say, above 7500 feet, the mule deer are actually better tasting then the white tails. High altitude White tails are pretty rare compared to Mule Deer so most deer shot over 7500 feet are mulies, but I have killed a few WTs too.
However because the numbers are off sides, the comparison may not be 100% valid. To be sure of that I admit I'd have to kill the same number of WTs as Mule Deer and eat them all. Thinking back now, I can only remember and count 5 WhiteTails I have killed over 7000 feet high in my whole life, and the number of mule deer I have killed between 7000 and 10,000 are more then I can easily count.