like anon said, Occam's Razor
its ridiculous to assume someone could have the ability to fake this
one point no one has really thought of...
pokemon r/b/y back sprites were all 28x28 pixels and then scaled x2 to get a blocky, pixely 56x56 image
im the final g/s/c the back sprites are all 48x48 pixels and look rather nice,
ALL of the back sprites in this leak (especially the first 151) are 48x48 pixels but arent as good as then ended in the final version of gold
its like, theyre mostly the same pose, but just shittier art
why/how could someone make hundreds of custom back sprites and so convincingly make them look better than r/b/y/ sprites and at the same time worse than g/s/c sprites
also:
https://docs.google.com/spreadsheets/d/1B5epMdm1Wcvh33qFABpw-SO76uZt6WNSl0UsD5yq_dI/htmlview?sle=true# 
