If you look close enough the label from this cart
almost looks as if it was made by hand
just look right here this part of the label was taken from Sonic 2
Becuase theres a picture of tails in it (but tails is nowhere to be found in this game)
The "4" was taken from some other source
just look at the color difference
And the picture of sonic himself could have come from anywhere.
Somebody created this label an pasted it onto the cartrige of another game
(probaly just trying to fool us into thinking it was real)