The .270 Win has less recoil than the .30-06 if bullets are equal or slightly LIGHTER, not heavier. The cases have nearly the same case capacity, so the heavier bullet (with standard powder charges), the greater the recoil.
The .30-06 is more flexible for various game, especially larger game than deer and black bear, but the .270 Win has a bit better trajectory, especially with 130 grain bullets. I've used both and prefer the .270 because I shoot deer any distance out to 400 yards and like to use light 90 grain Sierra HP handloads for target shooting, running deer matches, etc.
The .270 is a fantastic deer killer and with Hornady 130 grain solid (gilding metal) GMX bullets, is better than ever! The attached picture shows a comparison between new and bullet recovered from my deer this year. It was a 50 yard (left-handed shot from a tree stand to the back of a 130 lb. buck running dead away. Due to the slight downward angle, the bullet remained in the deer's neck and would have been the fatal shot, had I not fired another one at the heart/lung area that killed it instantly.
Recovered metal weight was 127.2 grains, 98% of original (not including the plastic tip). Best part is that the meat is 100% lead-free! The meat-cutter said the bullet "hammered" the deer!