I'm pretty sure that back when revolvers were still used in formal bullseye shooting, mainly Centerfire, Colts vastly outnumbered Smiths, and I'm pretty sure that it wasn't because of better triggers, although they could be made pretty good, too, especially in SA. There might be a couple of reasons why Colts were usually more accurate, but certainly individual samples vary, and the grips have to fit your hand if you want to shoot really well.