It does not pattern better! It is one of those, everything being equal things

The ten gauge has the
potential to pattern better with heavier loads because the shot stack is shorter(for the equivalent weights shot charge) and less shot gets damaged by the choke. It is good in an everything being equal situation, and in theory, but each gun load combination is a law unto itself. The fact is the difference between a big 10 and a big 12 is about the same as the difference between 28 inches and 26 inches.

Not worth the argument. In my not so humble opinion, 10 gauges have the pointability of a railroad tie and I would choose a 12 everytime. There is a great selection of ammo available in 12 gauge. But for those who manage to point the big bazooka in the right spot, they seem to be gandarf**kers.