@kitler53
I avoided the issue of teams, because Sony and Microsoft seem to use entirely different methodologies. Microsoft seems to approach game development as a large group effort. Meaning that many studios can work on the same game at the same time. While Sony seems to prefer to make self contained units, and differentiate them by name. That isn't to say that Microsoft never uses teams internally. They probably do, but they aren't permanent fixtures that last for many years. They just put them together to get a job done, and once that project is finished they are split up, and moved to other projects.
I am sure there are arguments to be made for both approaches, but fundamentally there isn't any real difference between a studio of a hundred, and a studio split into two teams of fifty. The output should remain the same. In the end both will release two games in the same time frame. There is also a small problem of if we try to guess how many teams these studios can run concurrently. We first need to know the number of people that they have employed, and that information isn't particularly easy to come by.
Well to be more concise it isn't particularly good data to work from. When I did find numbers while researching this thread. They were generic estimates, outdated figures, or from second or third hand sources. What does it mean if the Victoria studio can employ between fifty and sixty people, but the studio can expand into adjoining floors if they want to increase staff. Will we be in a position to know that if it happens. Given the first account is being made by a member of that cities chamber of commerce.
Anyway I don't want to go there. Even if we can scour out the data for all the studios in question, and figure out what their total manpower actually is. We still have a small problem of the data being terribly unreliable. Another poster brought up something along those lines in this thread. They of coarse assumed that Sony somehow had more staff, but we can't know that for certain. Anymore then we can know how many Microsoft is employing. It just isn't doable.