Yah but i dont here any of them say that "ohh it was a crushing blow to NCR, they just say yah we lost some troops but we took it dont worry."
You know you honestly make no sense right?
Expecting them to break down and cry over it?
Oliver doesn't care, Moore probably doesn't care much, Kimball likely doesn't. The rest do, the men on the ground all the way up to Hsu, they care.
As for the BoS being the best? Person for person they probably are (depends on if we count MK2 securitrons as people) but strip their armour and they're nothing. More importantly, they lack numbers, that's not an "if they do X then they wouldn't". They do, they always will until they're killed off.
Why? They're fundamentalist technophilic morons who's only moral guidance is a book. Sorry, codex.
They've had it well and truly kicked out of them, the west coast BoS are done for unless they change their ways, which they won't. It's just a matter of time, how long does the NCR want to try and salvage their tech before they give up and just bury them alive?