P3509-a02 type board vs. P3768 type board for Orin NX module

Hello,

I have noticed that the J401 carrier board is a P3509-a02 type board, which is, to my understanding, based on the old Xavier NX dev. kit. board, but with Orin NX compatibility. I am wondering how this board differs from the P3768 type boards, which are based on the newer Orin Nano Dev Kit boards. Does the P3509-a02 board lack any core functionality that the P3768 has? Are there relative advantages/disadvantages of one over the other?

Thanks.