Ahem...
We of the Brotherhood have had T60 since about Lev 10. You just keep banging rocks together, wastelander. This is why you people can’t be trusted with technology. This is why you can’t have nice things...
As soon as I can backstab the Brotherhood, I’m going to. I hate those sanctimonious, tech-greedy, selfish bastards.
Oh, and they do adjust difficulty to level. I’m assuming you cleared Poseiden Reservior at that level 10. What I encountered at level 22 could NEVER have been handled by a level 10.