Japan and Australia are miles off, but Scotland and Argentina are very comparable levels of football.You'd also have to recognize that Argentinian league football is in a different world to the Scottish, Japanese or Australian leagues
The Old Firm are more financially dominant in Scotland than River and Boca are in Argentina, but then Gallardo didn't dominate that league.
Gallardo has never experienced anything on the radar screen of the PL, it's the exact same situation.