Shotguns are probably the very easiest at really low levels just because no one can aim at those levels and no one knows how to pre charge a fusion. But once you start getting closer to average games, fusions are definitely dominant. Even before the shotgun nerf, there were a few weeks where fusions were topping the kill charts in Trials iirc. People thinking that shotguns are completely dominating in higher levels—they’re not. Really, Omnioculus, Classy Restoration, and Lord of Wolves are carrying shotgun usage, not the actual efficacy of the standard weapon type. Use a regular legendary shotgun in a set of average to above average games without any of the crutches above and you’ll quickly realize it. They can still work, but they’re very easy to counter with Fusions, SMGs, and Sidearms.