If you all are that paranoid about photoshopping, why stop at translations? No image, anywhere, even in English, can be trusted. The chart can be fabricated entirely! Heck, if it's in English it's even easier to fake!!! We can have charts showing P-51s with hurricaneI speeds, 109 climbs, whatever.
I think you are all going way overboard on the matter, personally. He listed the original document it's from, several times.