Every guide on this site starts on a real copy of PES 2013 running on original hardware. Ratings claims are tested in training mode and then in matches, because an attribute only matters if you can feel it on the pitch. Tactics are judged across full Master League seasons on the higher difficulty settings, not single friendlies.
Facts about the game's release, modes and licences are checked against primary sources from the period, including Konami's own announcements, before they are written up. When the community disagrees with itself, as it does about the magic boots, we say so plainly and explain both sides.
We correct mistakes openly and quickly. If a guide is wrong, a reader email with evidence beats our pride every time, and the fix goes into the text rather than a footnote nobody reads.