Comments of chapter undefined of Legends Reborn Online

i kinda dissagree with the mc point of view of vitality, now that i remmber there was not description of each state value for example what they add to the character so im not sure if vitality is pure constitution or also healing speed because if mc go to vampire route, vampires are known to posses insane regeneration speed so fast they are extremely hard to kill so speed & regenration as well as stregth (they have lesser stregth than werewolves but they can fight them head on so they are not that much lower) should be the right build but the question is does regeneration apply to stamina or vitality stat? blame the author for wirting such an immersive story where you forget the lack of basic mechanics were not mentioned