http://i.imgur.com/5EtBB1c.jpg
Maybe it means they do more damage to M2 HMG? It would make more sense if you would post it in English so everyone could understand.
"Das schwere Maschinengewehr Browning M2 ist 2% genauer."
The Browning M2 Heavy Machine Gun is 2% more accurate.
Clearly shows a picture of a Volksgrenadier and is in the OKW faction...