I mean sometimes you really want to win early so hard that there isn't a chance for a comeback in clash. That means things like killing adult creatures even when you have the power advantage, because it furthers the damage your guardian will do, gives you more of a level lead, and means you won't have to deal with that creature come clash. I know it looks like a pub stomp in that situation, but a lot of that can actually come down to a team comp that is just weaker without key upgrades, or maybe they just need the map to change so things are closer together. I've been on both sides of that situation where one team controls sirens d point all game and plays defensively because they have the map and power advantage only for that to be turned on its head come clash because the losing team was allowed to keep up in level and summon an adult or two. If you have the opportunity to take from your opponent I would, because the difference between a pub stomp and an epic comeback can come down to small things like that