Upcoming Changes To The Pit Challenge Tier [MEGA]

For each 2% Health lost this battle, this unit gains 20% Offense and Speed (stacking). These bonuses increase by an additional 20% each time.

So its 40% increased offense and speed every 2% damage dealt?? 20% and the additional 20%=40%, am I reading this wrong?

Edit: Saw Doja's post....oof. I Will wait to see it in action before judging, but this seems a little high.