The USF grenades do the same damage as the OKW nades, they even have a better AOE profile.
However i believe OKW nades have a shorter fuse time and mabye throwing animation
The primary reason that you have this belief on the nades though is probably b/c riflemen have a poor formation(which is different for every squad just look at how paratroopers space out in their wedge) And that often leads to clumping up and more people dying. They should probably change the formation
