This is very, very encouraging. Doesn't mean it will translate into better performance come game-time, however, every "expert" who has ever commented on Branch since he's been in the NFL (and even during his college days), has consistently stated that the man has all of the tools and gifts to totally dominate the line of scrimmage. However, the most important attribute of all has been missing - that is "want to". Branch has simply never "wanted to" dominate in a way that would allow him to even come close to living up to his potential.
The fact that he got below his weight-goal before the summer, and has maintained that weight could be an early indication that the light-bulb, while not fully shinning just yet, might just be flickering on now... If he does actually get to a point where his performance matches his promise, it would be a HUGE, amazing development for this team...