Fallout has never really been like TES, even in Bethesda/Obsidians hands.

Certain things happen certain ways.

The Master never wins. The NCR always rises, Tandi and her father always end up living. The Chosen One resolved things peacefully, so Marcus could create Jacobstown. The Lone Wanderer completed the survival guide, rather than talking Moira out of it. And so forth, in many areas. Some of the events couldn't even happen in the game and seem to be mixes of events.

So... with that in mind, who do you think won Vegas?

The fact we are unlikely to find out til Fallout 4, or even until/if there is another off-shoot like NV, is painful to me. I can't complete my legacy playthrough of NV until we know, but thankfully since i've not quite started Tactics yet, that won't be an annoyance for a good year or two.

Probably Indy Vegas.

I have a feeling it'll be the House ending. It is the job you were hired to complete, after all.

Mr House's ending, it makes most sense to me that both major factions fail and Vegas stays under strong leadership.