Retina MBP Battery Question??

I just got my rMBP today and am so exited about it. I picked it up this morning and when i got home there were dead pixels so I took it back and exchanged it for another. The second is fine and all but I have a question about the battery.

The first one, while setting it up and recognizing the pixels, told me it had ~8 hr left on battery at 90 percent charge. the second one is at a 87 percent charge and says it only has 5:45 left. I went under the system report and the battery said NORMAL and had 3 cycles. SHould the system report say GOOD for the condition?

I was happy to see the first say it could last 8 hr but due to the pixels I took it back. Now I am wondering if the second one is defective because of the battery. What do your MBPs say under system report condition?