They are about the same to me and I've shot both carts in multiple rifles. Typically when folks speak of the two they are comparing a factory 270Win with 22" bbl to a Mark V with 26" bbl. The MV is a heavy rig with MC stock design vs lighter rigs with std stock designs. If anything, the MV in 270 Roy seems a little less violent in percieved recoil than a 270Win in a lighter package.
Now, if comparing customs of the same specs, the Roy is obviously going to have more recoil.
I will agree with this , I had a older model Weatherby Mark V Alaskan in 270 Win.
A great rifle all in all but this model had a plastic std stock design.
Recoil was not bad at all but I now have a Weatherby Mark V stainless in 270 Wby
The Wby style stock fits me like a glove.
The recoil seems less to me at 50 yrs old than the old 270 Win felt when I Was in my late 30`s.
AMRA