so widescreen patches are configs in a way and that also applies to them?
I cant tell you accuratelly, but i can explain a bit of managunz history
At some point
@Zar started implementing functions to apply patches to the ISO, this included support for the most known formats as pnach, the widescreen patches, FMV skip (to disable mpeg cutscenes videos) and things like that
Initially managunz wa applying this patches to the ISO... so it was needed to modify the ISO file permanently
Later was implemented functions to "unpatch" the ISO and revert it to how it was originally... this allows to enable/disable the patch
And later was implemented the PS2 config support, thx to cobra this configs can be loaded in decrypted format... so zar added a "PS2 config editor" inside managunz that allows you to create config files in the PS3 manually... some more time later it was found how to extract the official configs from inside gxemu and softemu (there was over 700 iirc) so zar added them as a database inside managunz
And the point we are now (and this is the part i ignore)... is the official configs supports a lot of features, included patching the ISO... and the ps2_netemu applyes this patches "on the fly" (so no need to modify the ISO permanently), and in some way this official config format superceedes all the other unnofficial formats
In few words, the official config format is a lot more powerful than the others (obviouslly, because is made by sony to patch his own emulator of his own console running in other of his consoles... they knows well what they are doing, lol)
So... zar implemented some kind of "translator" inside managunz to convert the unnofficial patch formats to the official format and to make all the patching/config/settings changes "on the fly"
Thats an awesome feature imo, but right now im not sure how much of that unnofficial patch formats are applyed "on the fly" (in other words has been "ported" to the official config format)
I dont know it because managunz does lot of things and tricks related with PS2 patches and configs, i dont know well how everyone of them works, and i guess everyone of them required some special magic tricks... sooo not sure