This is pretty easy from a business perspective from Sony.
Killzone 2 has sold 2.26mill
resistance 2 has sold 1.86 mill
Kz2 is developed by a first party, R2 by an independent studio.
Therefore, according to pachter, sony make 48$ on each kz2 copy sold, but resistance 2 sony only makes about 38$ per disc.
So it would make better business sense to put kz3 on the market in winter

This is pretty easy from a business perspective from Sony.

Killzone 2 has sold 2.26mill

resistance 2 has sold 1.86 mill

Kz2 is developed by a first party, R2 by an independent studio.

Therefore, according to pachter, sony make 48$ on each kz2 copy sold, but resistance 2 sony only makes about 38$ per disc.

So it would make better business sense to put kz3 on the market in winter                                                                                                                  Running a small business im confused by your logic.  You try to sell you best sellers in the holiday season.  Not put the weaker ones out and hope that they sell more, in order to make money.  This market is all about money, and kz3 would make much more this holiday.    Also Killzone 3 will have been in production for 2 years this holiday season.-  why couldnt they have a polished product in 2 years?

im a little surprised that resistance is leading the vote. but then again i voted for it. its just to early for a new killzone.

then again why not both.

I can see Resistance 3 getting a holiday release instead of Killzone 3 just because it's too soon for KZ3 to get a release.

I would say that at E3 Insomniac Games will present Resistance 3 for release early next year and a new IP for release this Christmas.

Killzone 3 is late 2011 material.

I think you havent understood properly, i said killzone 3 should to come out, not resistance 3.

I voted for Resistance 3 because though personally I want them both to happen but Insomniac has had a cycle of releasing a game a year with a rotation of one year Resistance and the next year with Ratchet and Clank and so this year it's time for Resistance 3.

I suspect a Resistance 3 November 2010 and a Killzone 3 March or May Release 2011

What makes Killzone 3 late 2011 material?  

Resistance 3 still leading i see.