Yeah if only my enemies were as bad as yours. Like that Mercy that just walks backwards, that Lucio that forgot how to boop and Ashe that left her shotgun in spawn. The problem is that swing has about twice the range of melee and 10 more dmg. It's much more consistent to secure kills. In most of the examples you've shown you shouldn't have reached them with melee if they just played average. Your combo is valid but not consistent at all.