The American edition was released in Mexico by Gamexpress, a licensed distributor of Capcom games, with a sticker on the back with contact information. Some copies also came with a sticker with the same barcode as the proper Latin American edition. Perhaps some copies were imported from the USA to meet the demand, or perhaps to have the game available at launch date if the Latin American edition was delayed.
2. Back with stickers
Thanks to Mercado Libre México (images 1-2).