Hand grenade's insane armor penetration (Oversight?)

[Citronvand]

A grenade in WL2 has 10 armor penetration, which is max if I understood it correctly.

In comparison, here is some anti-tank weapons:

Mangler (based upon?) - 5 Armor penetration
Sabot Rocket - 7 Armor penetration
LAW Rocket - 9 Armor penetration
RPG 7 - 10 Armor penetration

How the hell can a frag grenade have 10!? I think this is a oversight, it should in my opinion have a max of 4, but probably 3 armor penetration. Just look at it, it looks extremely similar to the M67 frag grenade, and that grenade certainly cannot penetrate a tank.

There does exist anti-tank hand grenades in real life such as the RKG-3, which the WL 2 grenade looks NOTHING like. But even if it was one it still doesn't have the penetrating power of a RPG-7.

EDIT: The wiki also states that it is in fact a frag grenade. Not a anti-tank grenade or some kind of magic missile.

If 10 Armor penetration is intended and required for whatever reason I suggest making them plasma grenades instead, or have some kind of description that explains it's insane penetrating power.

It reminds me of those lame first person shooters where you destroy tanks by throwing frag grenades at them... I suppose you could destroy the tracks if you were lucky, but penetrating it and make it go boom? Yeah, right.