Berserker card upgrade levels feel useless

I just need to post this and ask if you agree so maybe someone sees this post and gives berserker a much needed overhaul.

I am obviously not talking about the base card, x8 tower damage is huge! But the later levels only increase the percentage of damage absorbed without increasing the damage ceiling...

If I am taking billions if not trillions of damage my card will be maxed in one hit regardless from my absorption being 0.8% or 1.4%. Maybe they could a +1 multiplier ceiling per level as well? Or half a multiplier?

As it stands I feel like later levels of berserker are useless. There is no difference in percentage absorb if enemy damage could max you out ten times over in one hit. The extra levels need something more. Agree?