Just compared sizing of the Armada Eight Mitt to Empire Jossi Mitt.....
The Armada Eight Mitt is roomier once you're hand is actually in the mitt. However, the wrist entry on the Armada is much tighter and is going to be the limiting factor. Empire made the Jossi with an elastic stretch wrist that also has a zipper, which makes it easier to get on and off. The leather and quality is very similar on both.
If your hand runs big in the size, the Armada Eight gives your hand the most room (Empire is snug in the fingers), but you will have to force it in.