I don't have one pair of BDUs from PROPPER. I had 8 sets, 2 temperate and 6 EHW. I haven't seen any issue BDUs come out of a CIF in AZ, Ft. Jackson, SC or Ft. Eustis, VA. . . ever.
That said, I know very well that PROPPER makes BDUs, DCUs, and even MCCUUs for the Corps. I just don't have any myself.
Surplus Man, the TruSpec garments I have owned showed the same early signs of wear as you described. Incidentally, they sell uniforms to the gov't under the name "Atlantco." I have some of that stuff, and it is fantastic.
This isn't an issue of what brand and what kind of quality as much as it has to do with who get's what. The gov't will always get the best of the products, while the stuff for public sale might be SI or have other minor imperfections as well as lower QC stds.
Overall, Propper is GTG. Thier 100% cotton shit is all I wear in the summer months.