Khan, When he walk into Earth Realm in MK3, He suck all the souls of EARTH. Claming evey soul as his own.
Rayden, used his god powers to protect the souls of Warriors to defend the Earth.
If Bison had the power of Khan, Than he would be able to Claim evey soul as his own.
As it turn out, the earth warrors Defeated Khan and his armys and thus free the souls of Earth, (Who return to there bodies)
Bison is not on the level of Khan.
Ok first off I'm new here I found this thread interesting. One point I would like to make that I saw someone say. Yes Khan is more powerful than Bison. But no disrespect that's not really a good comparison anyway because Ryu also beat Akuma who is also more powerful than Bison. Using that to say Ryu looses is not really concrete.