Robbed.

Short version.
Got my first Jetdragon, struggled to cap him and barely did so, just to find out first time I carry him into combat his max health was reduced by roughly 60%.
I hate that games do this, "oh you beat the badass whos-a-ma-whats-it? Here is your prize, they gunna join your team!! What? noo noooo we didn't Nerf them, we bAlAnCEd them."