The DW is the only revolver chambering the 445 Super Mag, the best of all the super duper boomers. Yes, the 454 Casull, et al, will beat it out at the muzzle, but at 100 yards the 445 matches the 454 Casull with less recoil, flatter trajectory, far less cost, and holds six rounds vs five.
Even if you can stand the recoil of a 454, you can't afford to shoot it. And you have to be darn careful with handloads, it runs very high pressures, use the wrong bullets or the wrong powder, and the barrel will soon go bye bye. It's a gunsmith's job to replace it, not a quick on the range five minute job like the DW.
The 445 is not fussy about what you use for bullets. It runs 44 mag pressures and will use any 44 mag bullet. Half the shooting cost or less.