Which means absolutely nothing out of context like that… 
Of course, the current statistics make the Darfari warriors out of competition (especially as archers).
But low vitality can be a problem.
I once lost a thrall in good health at the entrance to Kurak’s cave. He died in a matter of seconds, and I received a message about his death at the moment when I got to the arena. I never understood what happened, perhaps he got stuck somewhere and got gassed.
Thrall can freeze and get stuck at the most inopportune moment.
Therefore, if he has less than 3 thousand vitality, this is a dubious option for me. If Lian has 2x more vitality on 20 lvl, I will choose Lian.
Or… you could make a rebirth elixir or two
Lian needs 138 Strength points to do as much damage as a newly placed level 0 darfari elite…
Despite him starting out with 30… there’s no way he’s going to get 100+ from leveling
Which means that things he’s fighting will die that much slower… inflicting way more damage on him.
Now the above works really well on good functioning servers, sure if your thrall AI is bad because the server is overtaxed or you just pay no attention to your thrall being stuck on a tree and maybe even set to passive or some other weird user error… then yes… extra health is nice… but you know what’s also nice? 
Paying attention to a thrall if you choose to play with thralls… and not making user errors.
It’s not really an issue if you use rebirth elixirs though, since darfari can get just as much health with the right perks… they have access to some really nice perks including a possibility to roll 3x 15 Vit perks… which other thralls simply cannot.
Turns out I completely forgot about them and never used them.
Probably because I use the NPCPerks mod.
I’ll have to try it, it looks really cool.
Started playing with thugras this weekend and with a little patience you can get them to 4k+ hp.
Sure a Dalinsia can go higher but why when thugra hits that much harder?
Honestly I’m not entirely sure this is a mistake either. We’ve always had easy/guaranteed spawns for the best thralls. Zerkers have a guaranteed spawn and are easy to get and the same goes for relic hunters. Thugra is about the same distance from noob river as unnamed city.