Basically the MEMS Harness has 12 MEMS-only capacity at the front, 8 at the back, and 10 generic Armor Capacity that can also take other Armor Modifications. So e.g. Non-Conductivity 5, Chemical Protection 5, on the back two Medkit Pouches plus a Tactical Sling Mount on a big gun, while on the front two quickdraw holsters, 1 equipment pouch with a flashbang in it, and 4 ammo pouches. That's 10 normal Capacity, 8 MEMS back capacity, 12 MEMS front capacity.
The table is horribly wrong.