Does GLaDOS say anything meaningful when she “gives us the fast version” in Test Chamber 8

I actually came up with a different solution myself. I stood by the portal and noticed that despite looking like the bridge is keeping you from using it, you still have half a usable portal. So I walked through and picked up the turret and tossed it back through the portal.

GlaDOS seems more interested in dividing Blue and Orange than picking favorites, and will show favor to either Blue or Orange. In the Yogscast, GlaDOS awards Orange "five science collaboration points" in one level (10:27 in), then awards the same to Blue in a later level (11:45 in):

In a later episode, GLaDOS states that:

• the challenge would present a challenge for one of the two given one's performance so far, but doesn't say who (0:00)
• the two form an excellent partnership with one handling the cerebral challenges and the other "ready to ponderously wander into action should the test suddenly become an eating contest", again doesn't say who is better (5:28)

But the smoking gun, as it were, that she doesn't necessarily favor Orange comes at 9:00 when she states:

To reiterate, this is not a competition. Still, if it were, Blue would be winning. [inaudible] Blue receives five science collaboration points.

So whether it's dependent on performance is possible (although unlikely if you watch these videos), but she doesn't seem to have a complete disdain for Blue.