suikokid2 wrote:I was just showing it is listed on the site.
I was talking about the PSP differences guide (here). That GS2 secrets page was written something like 10 years before the PSP version came out. You'll notice it says the Matilda Glitch is there as well, with no exception mentioned for the PSP remake. Someone could amend it, if they have the time, to mention places where the PSP version differs. Assuming there are other places. But in general, the reason that PSP differences guide exists is to provide the information without having to comb through every page on the site, adding version-specific qualifier in who knows how many places.
You can suggest such fixes in the Website Forum, typically in the miscellaneous errors thread. Bearing in mind that this is a community maintained resource, and the universe isn't somehow broken if a 10-year-old page wasn't immediately updated, or if the information provided isn't exhaustive and immaculate.