Not just a little 
The PMDG aircraft are incredibly detailed simulations of the real aircraft. They have been for previous simulator versions as well. And all that time and effort to push an addon to the level where it is almost a simulation in itself you simply do not get for 5$.
The only exceptions to that are the freeware aircraft by some of this hobbies most talented creators.
Manfreds Connie and DC3 or Milton Shupes aircraft were at least on par with the best payware for the old simulators. And having been part of Team Connie I can tell you first hand just how much effort went into making these machines fly.
Yeah, I can imagine. Well the statement I received after I made that $5 purchase was for “flight sim credits” and it never said anything about the 737-700 that I thought I purchased. So now I have no idea.
Your are absolutely correct! I have been a simmer for years, since the beginning had all the Microsoft simulators. and yes! With FSX
You are correct! With FSX you could find any aircraft for free, example LET 410, Dash 8 (there is a free one, but is garbage, I do not understand how they offer that aircraft at all) Also the British Aerospace planes, just to name a few. With MSFS2020 they ever took down the Twin Otter, can not be found even with pay ware. Only worth while free aircraft is the FBW and Headwind aircraft, they even downgraded the CJ4 which was better with the Working Title version. I am not for the scenery, but for the aircraft, which I dont believer Asobo is supporting very well. So I do not think I will be purchasing the 2024, I understand that Xpane is much better with aircraft.
I have had every civilian flight simulator that you could buy and run on a PC.
And I am certainly not going to argue for or against any of them.
However blanket statements like „Xplane is better at….“ in my opinion simply are not true.
Certain aircraft, with very dedicated creators, are behaving closer to the real thing as far as CFD or aerodynamics are concerned.
However if the designer has not been quite so diligent, the aircraft is likely worse than anything in MSFS.
And then there is the general user interface, Wx implementation or ATC….ok that last one is not exactly a selling point with MSFS.