It is pretty crazy but I still think the fact that there are so many different races at similar distances, and the fact that there are quite a few relays, has to be factored in. 7 of the 8 golds he won last time were at 100m or 200m and I think 3 were in relays.
Greatest Olympic swimmer without doubt. Greatest Olympian ever? He's got to be in contention but it's not a given.