Well, he's obviously right. The fact AmigaOS 4 can transparently run 68K software does NOT mean it doesn't need any emulation layer to do that.
I think he was talking about OS itself, not other 68k software. And OS4 runs natively on PPC, it's evolved from older versions (like 3.x was evolved from 2.x etc), it has compatible API etc. So, AOS runs natively on other than 68k architectures nowadays. Of course you need emulation layer to support old software which can't be recompiled for PPC, but that wasn't the point here.
