And neither is THAT good for pilotage.
I'll change my tune when you can report at the cement plant at KSQL like every pilot has to IRL.
At my own airport (KPAO), only one of the commonly used landmarks appears in any of the sims -- and that's because it's a high rise bridge (and it's not in all of them). For the record, the missing ones are (1) Shoreline Amphitheatre, (2) Ames Research Center large wind tunnel, (2) Stanford Stadium, (3) Ikea, (4) Train Bridge, (5) Salt Pile, (6) KGO, (7) SLAC (8) Sunken Ship, (9) Bird House, and (10) the Landing. A few of those are charted on the TAC.
Departure procedures out of KSQL require following specific streets. One of them has you overflying the "diamond shaped pool," and there is a 5 story building (Oracle HQ) under left base for 30 that's quite the issue for a student pilot.
How the hell do you fly VFR if none of the landmarks are there?
And for the stuff that is there, it is FAR too easy to spot. On a reasonably nice 8 SM vis day, spotting traffic in a straight line on base after your crosswind turn requires some effort, especially if the other aircraft is a bit low and wide over a city. It's much too easy on any of the common sims. Spotting an airport 10 miles away in flat farmland is not easy unless you happen to be aligned with the runway, even in 50 miles visibility.
As for performance, I've yet to see one that spins correctly. Slips are hit or miss.
I can only understand the claims that they are "good" or "helpful" in the context of a student pilot who hasn't really gotten into the details yet. On the surface, they look nice. Just underneath, there are BIG holes.
So, you have to ask what you want to get out of it. It certainly can teach you how certain avionics work, at least after a fashion. FSX (and the FlightGear knockoff 172P) can teach you how the KAP140 autopilot works, though no student pilot is going to be using autopilots extensively. It can teach you to trim if you let it -- but not correctly. You end up trimming for constant yoke position, which isn't how it works IRL. The control feel is not right at all, and the two finger trick we tell students to use IRL doesn't work in the sim.
Yes, I was a flight simmer too, before I was a pilot. It was fun. It was only very slightly useful for learning to fly a real airplane. I still occasionally use the sim, mainly to teach things to my kid. Except I can't teach him about spins because FSX always changes them to spiral dives. And the landmarks aren't there….and so on.
Here's a nice test for that C150 dynamics. Disconnect the rudder pedals. Pull it back into a straight-ahead or right-turning power-on stall. When the left wing dips, correct with ailerons while still holding the yoke back. IRL, this will give you a nice spin entry. What does the sim do? It's not a spin if the airspeed is high.