It's better than the Judge, I think we can all safely say that
There's two ways to look at the Governor: the first is you look at it solely as a shotgun revolver, and in that it works well if you shoot at something under 15 yards away.
The other way to look at it is as a standard revolver and to that, I don't know how it works because all I've read is it's not accurate, which is likely truth. Firstly, the free bore in the cylinder is huge with this revolver and I don't know if that length of travel the bullet has to take decreases accuracy or not. I would think that the bullet would be corrected by the forcing cone to straighten out the way it's supposed to, but IDK.
One thing I can tell you is that I severely doubt that the gun has any sort of chamber throat on the chambers because it's designed to shoot .410 shotshells. For .45 Colt or ACP to work, their needs to be good chamber throats.
Then there's the rifling in the bore, which I would imagine is along the same lines as the Judge, which is to decrease spin of the shot as much as possible, yet try to impart spin on a bullet.
The barrel itself is technically considered a snub barrel because it's under 3 inches long. That means there's not going to be good velocity with most ammo and hollow points susceptible to not expanding.
I'm on the fence with the Governor and have been for a long time. I decided that it wasn't worth me buying over a Ruger Redhawk .45 Colt/.45 ACP given that I can load the .45 Colt with two .45 balls or #8 birdshot and use the same way, not to mention be very accurate with .45 Colt, including the Ruger only .45 Colt stuff that would make the Governor resign from office.