How to put in a single game all the broken units?

Play OStheer, Check
Use Sniper, Check
Use CAS, Check
Spam Grenadier, Check

Turbo mortar Check is missing.

Sniper invulnerable to flank, Check
Sniper killing 80% of a squad in 1 shot, Check. Because you know, you can't kill it early game while you completely flanked it, it is completely normal that after 5-6 min he can almost OS your full health squads.
Flank the MG and steal it Check
Use Riflenade to outrange the the MG with Gren (who needs to flank a MG in those days? certainely not Ostheer ), Check,
Select CAS and spam mine, equip all you Gren with LMG in 6-7 min Check
Spam Faust Check,
Spam Strafing run, unesquivable in the borders, Check and let's be honest it isn't esquivable in the middle of the map as well.
Spam Reco run and strafing run in your base to kill your ambulance Check

I have played two time in a raw vs him, same opening, I flanked his Sniper early game 4-5 times in 2 games and he survived each, I had literaly the sniper in the middle of my squad 3 times.
Here we are, an army fully equipped that can spam mines, riflenades and faust, that OS any squad in 3 sec with a simple focus fire from its blob vs an army that can barely buy its BARs at the same time.