Even most the died-in-the-wool 270 shooters will grant that the 30-06 is more versatile.
EKM will tell you that I am probably the biggest .270 fan on this board and will argue its killing abilities all day long but even I agree with this 100%.
The 30-06 is absolutely the most versatile cartridge ever devised bar none and is IMHO the best choice for a single gun hunter that wants to hunt everything from pronghorn to moose. The only thing I wouldn't jump right up and hunt with it would be the big bears although it is certainly capable there as well.