The way I read the statement (and maybe it is wishfull thinking) is that Acube can deliver OS4 on practically all PPC-based hardware.
So, maybe they've just signed an agreement just in case OS4 is allowed to run on Samantha (allowed by Amiga Inc that is).
Also, I think just about none of us here knows the exact wording of the contract between Amiga Inc, Hyperion and Eyetech. I don't know the exact wording. If I knew the wording than I would still have difficulties in understanding it as I'm not a lawyer. Maybe a very clever lawyer found a tiny little hole in the agreement, just big enough to allow different PPC hardware (or atleast big enough to justify a shot at it and risk legal action by Amiga Inc).