in most scenarios in wotlk you could play well to shut other teams burst down, or avoid cc. it just felt like you could actually do things in general because mechanics were more demanding for most classes.
you cant really make big plays anymore in mop and being able to do good damage isnt impressive either - any idiot can pump out insane damage and sick cc because its so simplified. its why people stopped making arena videos... there was just nothing impressive/worth showing when you went through your clips at the end of the day.
if you think wrath 3v3 was centered 100% around pumping damage like mop is, then i doubt you played the game at a high level at the time.