Hmmm. Not too sure about this source.
Type 93 and Type 94 light tanks were produced from 1938 and were accepted into service by the Japanese Army eventhough they did not fulfill the requirements of light tanks according to the Japanese High Command. As a result in 1934, Mitshubishi Heavy Industries produced a prototype of a light tank…
OK first off, it just doesn't make sense. How can you see that something you take into service in 1938 doesn't fit your needs, so you start an alternative project in 1934?
Q. "When is the best time to plant a lemon tree?"
A. "You should plant it 4 years ago."
Oh, and there was no such tank as a Type 93 light tank in Japanese service in WW2.
There was a Type 92. And there was a Type 94. And BTW the Type 94 (designed based on the British Mk VIb, IIRC) entered production in 1935, not 1938, and was considered pretty OK by the IJA for it's intended role, which was as a recon tankette. It was considered successful enough that over 800 of them were built.
Which raises another interesting point (not a criticism of this article, just an interesting point). Many of us often think of Japanese tanks as backwards, obsolete, and rare.
But the Type 94 was very comparable to European tankettes and light tanks in 1935-1939. It is no less than a L3-35, a Mk VIb, a Pz I, an R-1 or a T-40. And it was built in respectable numbers.
And the Type 95 was very comparable to European light tanks in 1939. A 37mm gun and 40Kph speed. Compares well enough to an A9, an M11/39, a Pz 35t or 38t, or a T-26, or even an M3 Stuart. And it was also built in very respectable numbers.
Of course when you put a Type 95 against a Sherman in 1944, you may find it mis-matched. But the same is true for a Pz 38t facing a T-34 in 1943.
-Mark
(aka: Mk 1)