Based on when they are all upgraded,
FG 42
Magazine capacity ― 20 Rounds.
Damage Per Round ― 14.4
Damage Per Second ― 180 ~ 199.2
Recoil Strength ― 40(Vertical), 17(horizontal)
M2 Carbine
Magazine capacity ― 30 Rounds.
Damage Per Round ― 8
Damage Per Second ― 90.6 ~ 100
Recoil Strength ― 46(Vertical), 15(horizontal)
.
.
and now to Compare both weapons,
M2 Carbine compared with FG42
In conclusion, M2 Carbine cannot be the counterpart of FG 42.
.
Instead of M2 Carbine, Allies needs another weapon to counter the FG 42,
And M1941 Jhonson LMG would fit perfectly.
M1941 Johnson LMG
M1941 Johnson LMG was used both as Light support weapon, and as an Automatic rifle.
Just like FG 42, M1941 LMG was mostly used by Special forces, like Marine corps and Commandos.
also, she had a fire rate of 300(slow-fire mode) to 800RPM, which also can be seen on BAR.
She shoots .30-06 Rounds, which is the same round with M1 Garand,
it would have damage of 12(stock) ~ 14.4(Fully upgraded) in-game.
M1941 LMG to be Compared with FG 42,
As shown on the Chart, M1941 LMG and FG42 have almost same stats to be compared.
So in Conclusion, M1941 LMG would be the PERFECT counterpart of FG 42, instead of M2.