Question about revive

By Nephalite, in Descent: Journeys in the Dark

Okay my gaming group has just finished the intro mission "First Blood". The only ruling problem we argued about was reviving a downed hero as an action. The OL was convinced even if the hero was revived by another hero, the hero being revived had to wait till the hero's next round to act. We argued that the player who was revied by another hero would get to act on the turn he was revived. So which one is it ?

A revived hero gets his normal 2 actions.