http://www.stat.coh2.hu/weapon.php?filename=riflemen_bar_30_06_light_machine_gun_mp
Bar dps: 5/14.70
Rifles removed: 1 garand
Cost 60
Final squad dps:12.36/45.34
Vet3 RA: 0.97 - 0.97x23/100 - 0.75x15/100= 0.64
http://www.stat.coh2.hu/weapon.php?filename=volksgrenadier_mp44_smg_mp
Stgx2 dps: 1.99/8.27x2= 3.98/16.52
Rifles removed: 2 kar 98k volks
Cost 60
Final squad dps:9.77/31.34
Vet 5 RA: 1 - 10% - 0.9x10/100 = 0.81
http://www.stat.coh2.hu/weapon.php?filename=grenadier_mg42lmg_mp
Lmg42 dps: 7.19/7.66
Rifles removed: 1 kar 98k grens
Cost 60
Final squad dps:14.42/26.32
Vet 3 RA: 0.91 - 0.91x23/100= 0.64
Don't use that site for dps calculations, they do it all wrong. You can use it for some things like armor, penetration, basic stats, but DO NOT use their DPS.
You can use this from cruzzi: https://drive.google.com/file/d/0B7gwy65JLbSRMEJ3M2ZPandMMW8/view?usp=sharing
Download the file, open it with your browser.
Fixed your basic stats:
Bar dps: 3.939/13.204
Volks Stg: 1.446/7.52
Gren lmg42: 8.935/6.121
Also remember that those are only for range 35 and 5, without looking at the actual dps curve of the unit you get a flawed perspective.