It has the same or lower SRM than pilsner and wheat have
That is most certainly not true. Weyermann Light Munich is 6 L, Weyermann Pilsners are generally less than 2 L.
Munich malt is made using a special process, it is more intensively kilned than other base malts which results in a darker beer.
Briess makes a 6-row munich malt which they say tastes exactly the same as 2-row, but I've never used it. I don't think many european brewers use 6 row malt.