I don't know what version of the game you were playing but there was certainly not 3 NPCs within view of entering the strip. I found a lot more than 3 NPCs on the strip within view. Your argument is fail, not the strip.
It kinda depends on *when* you show up. NPCs on the strip have schedules just like everyone else.
At some points, all the people might be inside gambling rather than stumbling around drunk.
An essay isn't a creative work of fiction so I don't think the comparison applies. At best a story is given "a review" and the reviewer tries to provide reasons for his conclusion, which is what we've been doing here.
As someone who holds a degree in creative writing, I have to say this is completely wrong. Stories can most assuredly be graded - in workshops, my peers graded me, as well as my professor. There are objective standards that apply to stories and can be used to grade them. Things like grammar, punctuation, depth, plausibility, attention to detail, characters... There's some subjectivity in exactly what standards you use, but to claim that you can't objectively compare two stories, or that you can't objectively rate a story just because it's a story is bunk.
And by the objective criteria I learned about while getting my degree, I can safely say that New Vegas' story is better in nearly every way than Fallout 3's. The characters have understandable motivations rather than being simple one dimensional caricatures. They're also massively deeper than any character in Fallout 3. Caesar appears evil to the core if you look at the society he constructed, yet actually meeting him, you see that he's fairly genial and has reasons for everything he does.
The plot too is deeper; every faction has its own motivations and reasons for doing what they're doing, they aren't purely good or purely evil. Compare Fallout 3; It's basically a story about a benevolent army of knights versus an army of evil black knights, along with a bunch of mindless monsters thrown in for no reason. Why does the Enclave want to murder everyone? Lolz, because it's what they did in Fallout 2 of course! Why does Lyons want to protect people? Lolz, because he can! Why do the mutants kill and eat everything they can see? Lolz, because they're hungry!
New Vegas, meanwhile, it all bout the interplay of several deep and interesting factions who have their own realistic motivations and reasons for doing things, and in the end, the player can never truly be sure that whatever faction they supported is the "right" choice.
If I submitted a story with as much depth as New Vegas in one of my writing workshops, I'd get it back with an A and very little scathing criticism from my peers. If I submitted a story with as much depth as Fallout 3, I'd be lucky to get a C at best, and everyone would talk about how it's too simplistic and that the characters with perhaps a handful of exceptions are wooden caricatures.