Proper technique and fundamentals are paramount to everything else. Once that is accomplished, the rest comes into play.
One should be able to shoot accurately with any semi auto regardless of brand. Same for revolver.
I am fortunate to shoot many different pistols I own as well of those of many friends. My groupings and quality remain true accross the pistols. If a sight is off, it just means that tight group is all off together in the same holes, not all over the place.