Well, when Walt came out he definitely looked more like my family's newborn babies than Dean did, and I thought for sure people would take note of that fact. But from the moment I took him in public, I started hearing it all over again. "He looks JUST like Dean." or "He looks JUST like his dad!" Even at my 6 week apt. with my OB-GYN, the nurse who had never met Matt said, "He must look JUST like his daddy." Wha???? I have only had 2 people tell me that Walt looks more like me than Matt or Dean. Matt said it's just because he's a boy and to wait for a girl.
At 2 weeks I don't think they look very similar.
Walt is acutally only about 6 weeks in this picture, but Dean is 3 mo. When I saw this look on Walt's face it immediately reminded me of this pic. of Dean. It was the first time I thought, "hu. I guess they look kinda similar."
The boys are both about 2 mo. here. The older/chubbier Walt gets, the more they look like brothers to me.
So, while I think they look like brothers, I definitely don't think they're carbon copies of each other (or of Matt).