Well, if the IP is the same, its totally irrelevant which computer you're using. Anyway, I didn't believe you and Jihadi were the same person till you let slip that you knew he had a different IP. Now I'm not sure, but I think I just about still believe you.
I know he can't have the same IP, its extremely unlikely, as am signed up with a little known company (Opal Telecommunications Plc) so I highly doubt it.