I've only owned a regular X-Bolt and a Mark V hunter, but I can tell you this 100% definitely for sure beyond a shadow of a doubt that the trigger on the Weatherby is far, far superior.
With a trigger spring I got my X-Bolt down to 3 pounds, 3 ounces. The Triggertech on my Mark V broke at 2 pounds 13 ounces out of the box, and adjusted down to 2 pounds 9 with a few clicks. Feels really good right about there.
Another small note, the Browning Recoil Hawg brake is really quite good, probably better than the Accubrake.
Braked, they are both hilariously long.
Inflex recoil pad over the Weatherby. Weatherby stock geometry over the Browning. I prefer a hinged floorplate, so I kept the Mark V in .300 Wby.