I'd agree that they are pretty much a toss up! I just prefer the .308 over the .270!
I'll admit I'm prejudiced though, I just do not like the .270!
It's a fine cartridge, I just don't like it, and I've always liked the .308!
It cracks me up when I read the gun guru's from the big gun rags, talk "minimum" caliber for elk. They usually say the .270, and rarely do they mention the .308!
The .308 will take anything the .270 will!
As I said, take your pick, they are both good! In fact, anything from 7MM-08 through 30-06 is'nt worth arguing over, for most situations!