depends, manga saitama->goku since the only thing goku did in the show that was slightly comparable to saitama was doing a million pushups, saitama did 100 pushups and sit-ups every day for 6 months, that’s 36000 for strength, not close enough, but saitama also did a 10 km dash, 600 (the calories)x180=108000, not close enough? he also jumped from the moon, and landed on earth in (around) a second, that’s still an amazing feat as you would’ve needed to move at light speeds. manga saitama->goku, no explanation needed (used 1 hand to destroy the whole moon of Io, blew away jupiter with a single sneeze, could manage to defeat celestials, etc.). manga goku->saitama, goku managed to shake the living world while fighting, the living world is comprised of realms that stretch beyond infinity, so goku was able to shake an infinite amount of space with one punch. manga goku->manga saitama, same explanation.