Not sure about a specific measurement, but my MIAs (that the franchises are based off) are a much looser fit than the bauer 4 rolls I had a year or so ago.
They're probably a little bit wider, but if the gloves aren't a tapered fit, I think inner padding thickness and especially palm tightness have a bigger impact on how roomy the gloves are. My MIAs were repalmed with MSH, so they might not be comparable in palm tightness to off the rack franchises.