Ok rpg mechanics what do you mean by that it's quite vague 2 quest resolution i take you mean the way a quest can be resolved? The only proof of this is the MQ but in terms SQ fo3 are probably better but plz clear up what you mean by you're statement.
The way you're able to complete a quest.
FO3 had a Tenpenny Tower situation and Harold, other than that I don't see many quests where I get much of a choice.
For Wasteland Survival Guide I get to option to say no, do the quest, or do the quest more annoyingly with the optional objectives.
With that capture the slaves quest I have to use a mesmetron on 5 people and bring them back.
In Blood Ties I have like what? 2 outcomes?
A lot of quests in FONV had several outcomes and choices.
Not to say there weren't quests in Vegas that were linear, like telling an NCR dude at Mojave Outpost about Legion, that's pretty linear.
Still, FONV had more choices to do, and one thing that puts it in front of FO3 by a large marginal is: You can be a pacifist in NV if you choose to. That you cannot in FO3.