Yes, the "AmigaOne G3SE" is "just" a TeronCX board, and the "AmigaOne XE" is "just" a TeronPX board.
I put the "just" in quotation marks, because of the "so what?" factor.
Eyetech is "just" a distributor of Mai Logic's products. Eyetech, or other distributors, have nothing at all to do with design, development or upgrading of the boards. As Mai produce newer revisions, they're made available to the distributors. Is there something strange about that? So Mai made their latest "commercial" revision of the TeronCX, recently presented by its designer, penguinppc.org and Terrasoft (YDL) at LinuxWorld earlier this year, and now this is the board that will be sold to Eyetech's end customers. So what?
Since there are no more Amigas, only whatever hardware that gets licensed, I don't understand why some people WANT the hardware to somehow be made "special," when all that means are lower production volumes, separate distribution lines, higher prices and less competition.
In the AmigaOS case, the hardware it'll be allowed to run on is made "special" only by means of a dongle, a licensed trademark and distribution restrictions. There's no technical reason or advantage involved.