I think the pattern board does not tell the whole story. Even when loaded with the same shot load I prefer the 12. The increased diameter makes for a shorter shot load and a shorter shot string in flight. Not as important when shooting at a stationary target but makes a big difference when pass shooting at moving targets. I also think the shorter shot column and larger choke diameter means less pellet deformation with lead shot anyway, making it easier to find a good load/choke combo in the 12.