aristotle - 8:31 pm on Jul 5, 2012 (gmt 0)
What I can easily notice is that Google MIGHT ONLY associate the backlinks from the old site to the brand site when they are both verified in WMT and the "change of address" option is used.
I doubt this. After all, there are many websites that have never had Webmaster Tools set up for them. For this reason, I don't think the Google ranking algorithm uses Webmaster Tools data.