Wheres the Poll? (hehe)
Anyways, if you look at what Bungie did when they started with Halo, Halo CE was good, but had flaws, Halo 2 was better, and Halo 3 was the peak of the online and campaign for Halo. 3 Main titles to get things right.
343i has only started with Halo, their first game was good, but certainly flawed. If you look at the story of the game, it was certainly a Halo style story, if you look at multiplayer it was a mess, having some good and bad spots. Forge was improved... but not improved. Weapons and maps were not balanced properly (but progressively being fixed). Theater was still the same, which was good.
The sales for the game were off the charts. That compiled with this being 343's FIRST stand alone title (not a graphical update to an already existing engine like Anniversary)... I would have to say:
Yes, Halo 4 was a success for 343 Industries.