Except for being an expansion pack sequel to Fallout 3, I'd agree.
This is probably the worst argument ever made by those trying to deny the fact that New Vegas is objectively better than Fallout 3 in nearly EVERY aspect and, thus, the one that should ACTUALLY be considered canon and not spin-off. Even the combat mechanics was highly improved thanks to better implementation of ironsights and working DT.
Here, let me show you
@Risewild's post you most probably ignored, since you STILL came to a conclusion that New Vegas is an 'expansion pack sequel' to Fallout 3.
Fallout New Vegas is very different from Fallout 3. You can't see the differences because you only play the games separately. The TTW team cracks open both games engines and there are differences everywhere. Our biggest problems are technical differences between Fallout 3 and Fallout New Vegas, and even things you might think are the same are not the same. For example every robot in Fallout New Vegas is different from Fallout 3, they have different voice and some have different textures and/or skeletons, same with giant ants. Multibounds also work differently, the sound effect on intercoms and holotapes are different too (in Fallout New Vegas we can't even make the same effect), Fallout 3 uses tree LOD which is awful while Fallout New Vegas uses object LOD for the trees. You couldn't have weapon mods on Fallout 3 engine without major changes too, the way the repair system works is totally different too, the speech checks are different (Fallout 3 is % based while Fallout New Vegas is specific value), karma works different too, reputations and factions work a bit different too, even radio stations work differently, weapon and armor damage and balance is totally different too, the value of the items is different, having different types of ammo in Fallout 3 would have needed to change the engine a bit too... I can be here telling you for days why Fallout 3 and Fallout New Vegas are not almost identical and that what is good on one is not good on the other and viceversa.
What you see is the same but even the textures and meshes for many things in both games are different, you just don't realize when you play.
Risewild is a modder, but not just any modder. He's a part of Tale of Two Wastelands mod team, a group of modder who had spent a chunk, if not most or even all, of their modding time to port Fallout 3 to New Vegas's better engine. Because of that, all those time working on the mod were spent on looking at the very core, codes, and system of both games, comparing them apple-to-apple, and with those post alone Risewild summed up that New Vegas is
NOT an 'expansion pack sequel' or whatsoever to Fallout 3, like you thought.
Not only that.
You had recently accepted that two different developer team would have very, VERY different idea on how to make a game and, thus, what game would they end up made. An 'expansion pack sequel', let alone a direct sequel, can never be made by two different developer team, UNLESS both of them know well AND respect the source material. Just as your regular story-mod to some game wouldn't count as a sequel (unless the owner accepted and canonize the said mod for some reason), a game not made in the mainstream of the series would count as a 'spin-off'.
Bethesda and Obsidian can say whatever the fuck they want as a form of corporate speak, but the whole world knew New Vegas IS the actual Fallout 3, while Fallout 3 IS the spin-off and should be called Fallout: DC, despite many would deny it because of..... reasons.
