I am still saying the one on the left is the pullet and the rooster is on the right based partly on the fact that lacing in hens is usually more pronounced than in roosters and the hackle feathers of the one on the right look like a roosters hackles ....
At 11 weeks old they both look like pullets. A cockerel would have patches of white on his wings, have much bigger wattles and comb, and be a lot redder in the face. The girls will start to grow their wattles and combs from around this age and start to pink up but they won't go really red until they are getting ready to start laying for you.
I was thinking that too....no real waddles to speak of on any of them. Maybe they're all girls. Fingers crossed. I kinda love all of their goofy little personalities.