A well geared synced down dmg who has perfect ted their rotation can easily tear stuff away from gladiator or early paladin tanks who are towards the end of their gear cycle (tank on such a level that new gear is only available on next level). Even if the tank is doing right things. Easy solution is for the dmg to go a bit easy and let the tank get at least the Flash in before they go all out, but many don't pay attention to that. At that point it's playing tag with the monsters which is highly unoptimal for any enmity combos. If the flash wouldn't have such silly delay it would be a bit more bearable.