By the way the Japanese land army had to fight the Soviet army in the final days of WWII. It couldn't do shit against the massive Russian tank formations.
That has more to do that the japenese army at this point was pummelled by the americans and the chinese at that point. even if the Russians did nothing the outcome would have been the same.
And the tank formations during their attack where not effective. nearly half of them broke down before they even reached the japanese . the battle was primarily infantry and with airplane support.