The Japanese had no armor in this battle. The outcome was entirely predictable.
Which battle?
August 1938 minor skirmish on Changkufeng heights, now completely forgotten by all except our own Homer Simpson?
Or July 1939 hugely significant (though largely forgotten) Battle of Khalkin Gol/Nomonhan?
The Battle of Khalkin Gol/Nomonhan did involve a Japanese division strength armored force. For further details and links, see several of the posts above.
According to this source, you are 100% correct, and Wikipedia is wrong.
From just the looks of it, this sources seems more authoritative, but it makes one wonder how they could report such diametrically opposite "facts."
I only know (or think I know) what I read.