Average Farmer: 5
Average Marine Doriki: 10
Rob Lucci Doriki: 4,000
Rayleigh's Doriki (100x stronger than Luffy) 400,000
Mihawk > Old Rayleigh
If we use these numbers Mihawk is around Base Frieza power level.
Granted, Toriyama's numbers never made any sense. Someone 100 times stronger than the average man should not blow up the moon. But if they did, One Piece fighters would easily go into pre-SSJ Namek levels of fighting.