Is Ice Becoming Overpowered?

So I kinda feel like this issue needs to be addressed. The ice school was born and bred for defense. They have the most natural health, and if you see one in game, they probably have around 4,500 health. They also have some amazing resist, a lot of times at least 50 for each school, if not more. They are the ones to go to for defense. However, to balance that out, they are supposed to be the weakest in terms of attacks. If this is the case, then why does their level 88 spell do more than the fire school's level 88 spell? Fire is supposed to be the second strongest school. If this is the case, then why is it getting overpowered? They are supposed to be a defense-focused school. Turn it down a notch Kingsisle. Either the ice school needs to take a step back, or the other schools need to take a step forward.