question: (the rooted G1 phone == the dev phone)?

[natspa]

what is the different between the G1 phone and the dev phone. It says that the SIM card and the hardware of the dev phone is unlock In the official site,so you can build the anroid and the bootloader by yourself.But the rooted G1 is likely to do the same things.Does the the rooted G1 is the same as the dev phone in the function about the building own android (kernel)?