Question on Second Wind in Regen for Sentinels

[Heatstroke]

Hi, I was under the impression that the power worked like Dull pain and Also like a Rez. It reads as max+ HP on self for 2 mins but when I click the power my HP doesnt increase like it does with Dull Pain. 

Am I misunderstanding something with this power?

Thanks 

[FupDup]

https://cod.uberguy.net/html/power.html?power=sentinel_defense.regeneration.second_wind&at=sentinel

 

City of Data says it should be increasing max HP, but there's a chance you might already have hit the HP cap some other way or it's because the amount scales with missing HP (more missing HP = bigger boost). In Mids, even at 1% HP and heavily enhanced into ED territory, the boost isn't a whole ton (goes from 1205 to 1464.96, no other powers or set bonuses active). 

 

More HP is still more HP at the end of the day, and still important to a set like Regen, but it's not as strong as something like Dull Pain (especially when used at high health).