Italian and Japanese armoured vehicles on an Italian battlefield

Which would perform better on an Italian battlefield in World War II, Italian or Japanese armoured vehicles?

The Italian vehicles are preferred, especially their tank destroyers, with late Japanese prototypes excluded from the comparison.

Italian armoured vehicles receive the preference in this hypothetical fight, chiefly because of useful tank destroyers and some other supporting vehicles. An initial argument about Japanese turret traverse is challenged, then narrowed to the difference between moving a gun within its mount and traversing the turret. Hand-finished production is identified as a constraint on both countries' ability to replace losses and sustain a campaign. Italian armoured cars and truck-mounted 90 mm guns enter the assessment alongside tanks. The preference excludes Japanese designs that reached only the prototype stage around 1945.