I find it hard to believe there’s any performance reason to choose one, certainly not for deer. Whichever floats your boat and comes in a rifle that suits your intended use.
One performance thought; I had dinner with a couple S. African PHs this weekend and asked about the 6.5 Creedmoor. They have had clients use it, and do so effectively, but indicated it would not be their rifle of choice on larger plains critters. They still prefer heavier, stout bullets from cartridges such as 308 or 7x57. Listening to them and their experiences has me reconsidering a build I’m planning.