While browsing through tvtropes, I found the following thing:
The Verse: ONE has implied this and One-Punch Man share a verse (He was asked and answered a question on who would win between Mob and Tatsumaki from said series).
Unfortunately, tvtropes does not elaborate on this any further. There are no links or sources pointing to the discussion mentioned, and now I am very curious to know what answer ONE gave.
According to ONE, if Tatsumaki and Mob were to fight, who would win?