In actual game situations, isn't the OKW fuel penalty closer to 75-80% of other factions? Due to fuel caches from Wehr allies (common in 2v2 games to get at least one) and the fact that OKW fuels the normal 4/minute base fuel income.
For instance, in a game I recently played, me (Wehr) and my teammate (OKW) were a bit on the back foot for map control but had a fuel cache up. Fuel income broke down like this:
Wehr fuel: 19
OKW fuel: 22
In this case, the OKW player was getting 86% of the fuel from that map control. Earlier in the game, when we had a natural fuel point but no cache, it was like this:
Wehr fuel: 17
OKW fuel: 23
In this case, the OKW player got about 73% of the fuel the Wehr player did.
Looking at actual in-game numbers, the OKW fuel works out to probably no worse than 75% of the fuel normal factions get. Based on this, if we are going to adjust OKW unit prices to reflect the fuel penalty, we should multiply by 1.33 (.75 * 1.33 = ~1), rather than 1.5.
OKW gets 66% fuel income on literally everything except 2 things; fuel drops from Luftwaffe supply and base income. Meaning that the percentage can jump around from 66%~ without a fuel point to up to 71%~ with a fuel point. However the base income can be discounted as it's just a starting point and all other factions will still have a lead on all other fuel incomes.
Cache income is decreased as well, which is why it's so funny that people complain about it because an OKW player will benefit at a reduced rate so if everyone has an equal amount of caches OKW will still be at a fuel income disadvantage.