eh, Cogs was right, you should do a bit of reading, start by reading his comment again! He makes two statements:
quoted from Wikipedia:
"AppleTalk was not built on the archetypal Xerox XNS system, as the intended target was not Ethernet"
"It also confirms that Localtalk was a RS422 serial network."
He doesn't say anything about AppleTalk being based on LocalTalk!