Can't be bothered to read the whole thread, but..........
For the last few years I have been conducting quite a number of 'trial lessons' on B737 sims (classic and NG). My observations are:
I have yet to meet a PPL without prior 737 knowledge who can either fly or land the thing without significant input from me.
I have met many MS flight simmers who have never piloted an aircraft themselves who can operate the automatics and set up an autoland without my help.
On larger aircraft, system knowledge is vital. If you don't know where to find the correct switch, it isn't going to do what you want it to do.
I fly the 737, but am in no doubt I wouldn't have a clue how to fly and/or operate an airbus without the appropriate training.
Sorry to spoil your day.
Ps: I can land a Tiger Moth. What an appalling handling.......