BOTSLAYER
You can be anything
Most of us couldn't care less for soccer. You have your fun with it but I couldn't care less about that boring game between 5 foot panzies and panty-weights.
Whether you, me or anybody enjoys soccer or not is irrelevant. The statement made was "best franchise in sports history". In my opinion that means this world which includes soccer in the discussion.
If he said best in american sports history then he has an argument. If you want to change the discussion to best in American sports history then I think the Lakers, Yankees and Celtics are up there. As well as the Detroit Redwings. Probably in that order.