I ask because they are not exactly the same. When I specify the gate at all airports and press the Fly button, the parking position is correct, but when I reset the position in GSX, it drops backwards. So what you are saying is incorrect.
What I said IS correct, because I never said the *Airplane* will END UP in the same position AS IF you were using the default MSFS positioning when using GSX instead of the default MSFS positioning.
I said the GSX Parking Position IS the same as the MSFS one ( it obviously is, since it's taken from the .BGL data ), and GSX will park with the airplane center in the center of the parking, which is NOT the same thing, because the MSFS default logic is to place the airplane front Gear at the end of the parking yellow stop line, which is wrong as well, since different airplane types are not supposed to have their gear always in the same place.
GSX uses the SAME DATA, but with a different logic, so the end result won't be the same, even if the data is.
The problem with MSFS positioning is that it results with smaller airplanes ending up way too far forward than they should be, making the jetway less likely to work, when in real life when there are multiple Stop positions based on airplane types, smaller planes like A320/737s have their Stop position closer to the parking center, especially because the widebodies usually park way closer to the terminal, so they can use the 2nd door for the Jetway.
This is closer to how GSX parks the airplane when there's no Customization, because the smaller planes will automatically park closer to the parking center, just because they are smaller. OF COURSE is not "ideal", because the larger the parking radius is, the more the center is away from a "good" Jetway position but it's a least better than default and, since GSX DOES offer a much better alternative, that is using a customized STOP Position, it's not really an issue.
Yes, the .BGL file format has the ability to specify multiple stop positions but, they are not used very much and, even if we tried to use it, it will be very short-lived, since it's only available by reading the .BGL file directly, it's not provided through the new SU10 Navdata API, so it's best we won't even try to rely on it, since we'll stop reading .BGL files directly very soon.
The problem might be if a 3rd party scenery tweaked the parking position trying in some way to "fix" the default MSFS positioning, which will never really work for all airplane types, especially on parking spots that might be used by both small and large airplanes at the same time.
So, again, you should try to understand we are offering a way more precise and realistic alternative than the default logic, that is the custom STOP position based on the airplane EXIT instead of being based on the airplane GEAR. With the hundreds of existing GSX custom profiles that has been made in such a short time, this is not really an issue, provided the profile creators understand the need to always set the Stop position.