Well that's unfortunate...
I was like : cool, I want to see the level 10 summoning, now I want to see this spider thingy.
Good thing I chose both skills school, I will rage a little less...
Even if the summon is more versatile, I tend to agree that for the health alone the summon is too good. Those help also soak damage so... And it's not like now CC can last more than one turn, so it would still steal one hit per turn at least to stay out of combat.