I explained why splitting into two teams doesn't hurt 2K. Much of the current gen stuff can be folded into the other game or vice versa.
Money and tech by itself doesn't solve problems. Experience, vision, and talent do, and 2K has that in spades. 2K has the better game because it's developers have been the better developers with the better vision under the better leadership-- proven developers that have a great code base who can execute.
That is the biggest advantage of all.
From the latest screenshots and videos, it also looks like 2K has the better artists as far as player models go as well.
This might or might not all shift years down the line but thinking Live has any developmental advantage other than being able to leverage Ignite is wishful EA fanboy thinking or a misunderstanding of how game and software development works.