Solo Play

[plloyd1010]

There is also some question whether German afv are efficient....
In white eagles (polish conflict published under 3rd edition) they are...
In deluge they all have leaders, but no mention of efficiency is made..

I don't see an if question, there is always a should question.

"Full-strength (not reduced) German AFV unit" is the inclusion statement under Armor Efficiency, in both the 3rd Edition and 4th Edition rules (it is also in the 2nd Edition rules too). Thus, for German AFV to not be efficient would game or scenario special rule. Such a GSR exists in Deluge and Peace in Our Time. It does not exist in C&CV1: War in the East,  White Eagles or Tank Battles, and is specifically reaffirmed in Hopeless But Not Serious and Sinister Forces. So, no if question.

Should is another issue. This is a rePete® and Craig question, with some others. My general view is that game of a reasonable level of simulation should, in reasonable probability, reflect historical or reality outcomes. In Deluge, the GSR seems to prevent that. The Poles, not regarding the TK's, have superior tanks to the Germans. Historically, the Germans defeated Poland in 39 days. (The Soviets did not attack until it was clear that the Germans would win.) German Armor contributes little, if at all, in Deluge (I don't know about PioT), and may even be a liability. That is the should question.