How do I tell a GSL from a "Red Broiler"?

[MoSo]

The farm store I got my chicks from now tells me that they got a mixed lot from the hatchery the week I picked up my chicks and the GSLs and "red broilers" were mixed together. At 4 weeks, the chick one of the smaller chicks out of 3 EEs, a Barred Rock and a Silver Wyandotte. Wouldn't a meat chicken be larger than the rest by now? Out of curiosity I weighed the chicks today and the largest weighs 11.5 oz, the smallest weighs 10.25 ozs. The gold chick weighs 10.55 oz.

 

[erin09]

Can you post pictures?

 

[MoSo]

Here she is as a roughly 4 day old chick (on the far left):

Here she is today at 4 weeks - not the smallest of the 6, but one of the smaller birds:

 

[PotterWatch]

Here's a picture of my red broilers and two ee's that were supposed to be broilers, you can see in the front is one of the ee's with a broiler towering behind her:

Another where they are a bit older. Again, an ee is in front and there is a broiler just behind her: