If you play properly, the initial wave for OKW is acutally powerful with vg absorbing damage,sWs HT disrupting enemy positionsing, sturms flanking to assault and perhaps a kubel providing suppression. So it is more possible for OKW player to assault to enemy troops instead of capping its own territory at te start of the game than other factions, hoping to bleed some enemy's manpower, or at least to force some of enemy's squads to retreat and to disrupt enemy's capping.
Also, due to OKW's resource penality, it is a better choice for OKW to decap enemy's points, especailly cutoffs, than capping OKW's own territory. This is because the fewer points the both side have, the less difference there are between OKW and its enemy's resource incomes. Furthermore, OKW does not have many defence structures and support weapons(LOL MG34) to deal with blobs and to build a strong defence line like Ost and UKF(I don't play CoH1 but I guess that's pretty much like PE in CoH1). So it is better for OKW players to choose an aggressive playstyle and tries to break enemy line instead of waiting enemy to break your line.
Just my two cents, and are focusing on 1v1. I draw those conculsion from my own automatch experience, and I hope those can explain something.