I've just played a 5.panzer mirror vs. some ultra bad guy (win rate 15%) while I'm super bad with around 30%. Well, the guy clearly had no idea how to build a deck and started suiciding units from the very begininning - some trash infantry thrown straight into my mg42, tanks etc. He suicided all his air. Well, I was winning until late phase B when all of the sudden he spent all his points on tanks (Panthers/Marders) and threw this through my lines with an A move. After 1 hour I lost.
Conlusion - this game favours luck rather than anything else. Just zergrush your opponent or just A move with a mass of steel.