Part of the issue is the courses that we have on WGT.
You mentioned that Ricky Fowler smashed a 6 iron out of a bunker onto the green, I think I saw the shot and it was at the Memphis tournament before the US Open. The lips on the bunkers and the sand are the key. Most of the BPB bunkers are too deep to play out of, almost all the STA and RSG are way too deep, just have to wedge back....which by the way is the same in real golf. Oakmont and Congressional have deep bunkers as well.
Kiawah has some bunkers with lips and some fairly flat ones. The real key at Kiawah isn't the lips but the type of sand. The sand at Kiawah is not what we think of as bunker sand but basically the sand from the beach, the course is built on sand dunes. You can generally in real golf and on WGT play from those bunkers with long irons and lose about a club in distance, unless you are up against the lip of course.
Basically WGT has some pretty tough courses meant to be played under US and British Open conditions. You notice that during those tournaments you see a lot of wedges out of fairway bunkers and hacking out of the deep rough.