Not according to Intel is wasn't. There is a reason it is called a platform. You need all the particular components that are recommended. If you have a political platform, you don't do some of what you claim, you do all of it (ideally).
You linked Wikipedia, not Intel
BTW it's quite ridiculous because we are speaking about "Santarosa", a codename and not an Official model name.
In calling these models "SR" you simply define a specific revision of C2D, bus and chipset, just to highlight the difference between revisions of the same platform.