Qn abt infighter and gunslinger

Try this:

According to what I know, an Infighter will gain approximately two times the HP it would normally get through leveling normally (not hp washed). I also heard if you add 1 AP into HP for a Pirate class, you will gain 16-21 HP. So an Infighter will level up and gain about 50+ HP, and a Gunslinger will gain about 20+ per level up.

My question is if I, as a Gunslinger, level up and I add 1 AP into HP, will it mean my HP will be about the same as an Infighters?

according to Dyxanije, which i believe is true, doesnt a gunslinger have almost equal hp as a same lvl infighter if the gunslinger adds 1 to hp point?

(maybe slightly lesser as lvls passes by since it varies from 16-21hp per 1hp added)