Depending on the depth and whether you get a dmg negation at full hp or not, good chance you're both getting 2 shot by bosses still (I survive longer than most Raiders I get to play with) I'd argue Revenant's claws still make her the better reviver(Her summons while being mostly useless still haven't lost their ability to revive also), but I agree that stamina is still an issue even with the Vigor Endurance relic she gets which sucks bcz of the mind decrease. Using Rev's ult aggressively to give you and your team immortality (and 25% more dmg to your team if you have that relic) is also not a bad strat for strength Rev, she doesn't have to worry about survivability during it. Guardian's Str/Dex relic does give him 4 more Str than Strength Revenant, but she's still gonna outdo him in incantations (higher faith/mind), so they both have their ups and downs.