Depends on the context. If you want to talk about nothing but numbers regarding external ballistics then yes, the 10mm reigns supreme amongst the auto loaders. If you want to discuss the merits of a service/personal defense firearm then no it does not. All handguns suck, some just suck less in key areas like size, weight, recoil, and capacity. A 10mm sucks in all of those areas compared to a 9mm/.40/.45. The .40 and .45 suck in recoil and capacity as well as size(mostly the .45). A 9mm is the best overall calibre as it offers the most benefits with the least amount of negatives.
Ask yourself why you're changing triggers or other parts on the gun. If it is to improve reliability then great, although you probably should have selected a more reliable design to begin with. If you're changing things to improve your scores then it's you that needs work not the gun. Your ability to apply the fundamentals will not improve if you constantly seek out mechanical crutches that cover up your poor form.