English isn't my native language, so I am sorry if I misunderstood you.
Not all wargs are like that, we don't all have the same personality, for example : Whenever I lead a small warg pack, I try my best to take out targets, if there's a mini there, I use a different tactic but still try to take out the target, but I don't push unless the creeps push. Wargs aren't meant to push, they are designed to go in, take out, and get out as fast as possible, or go in, interrupt and disable the healers, debuff the main dps, annoy the hunters; in other words aid the creeps in their push. We try to overwhelm you by coming from behind, or the sides. We can push, it's true, but we can't push enough without the creeps pushing with us. Most warg packs don't wait around, they try to pick targets and often do. ( I've been in lots of warg packs, we always get kills ) And one more thing, us wargs can try to begin the creep push by attacking the freeps directly, but if the creeps dont push on them, then there's no push.