I feel like a bonehead for misreading it. I agree with this for the most part, it still is a strong for a 2nd level spell I think.

I have always thought HP is underpowered for a 3rd level spell compared to other control spells (especially Fear) mostly because it is canceled with damage. I think HP would make more sense as a 2nd level spell and compare pretty evenly with RBI if it was.

HP - no damage but better effect, concentration, need another to free, freed by damage, cant use on creatures with charm immunity
RBI - Good damage, weaker effect, no concentration, can free yourself, not freed by damage, works on creatures with charm immunity