What fascinates me is that Overwatch completely deemphasizes killcounts or kill/death ratios. That's not to say that those are meaningless, this is an FPS after all and I would imagine that it is a tad difficult to play it without clicking on heads until they fall down, but games aren't won or lost based on how good you are at killing. Rather, they are won or lost based on how good you and your team are at reading the battlefield and choosing the right counters and spots for your supers, which I find makes the game really appealing (Destiny's PvP, at least in some of its modes, operates on the same principle, even if it celebrates kills and their counting much more)