Um, I see no reason that Destiny's final version pvp multiplayer wont be as good as Halo. I mean its the same company that made the good Halos. I for one had a blast for about 3 straight hours playing co-op story mode missions with my brother (who lives 6 time zones away).
We had headsets and I was playing Titan and he was Hunter, its was tons of fun, when he went to bed I solo'd some of the missions and it was not as fun, but still much more fun than I have playing any recent FPS campaign mode.
End of 2009 Predictions (Set, January 1st 2009)
Wii- 72 million 3rd Year Peak, better slate of releases
360- 37 million Should trend down slightly after 3rd year peak
PS3- 29 million Sales should pick up next year, 3rd year peak and price cut