You would have to work 50% longer to get the same amout of money as the other guy when you have 66.66% of his salary.
If he's making 100 dollars and I'm making 66 he's making 33% more than I am. I just simplified it to using 66 and 100 for the sake of simplicity
If were both working towards the same goal, and I'm making 66% of whatever he is making then I'll need to work 33% longer to make up the difference. (that is it offset the difference in income).
And in the end, 1000$ stays 1000$ dollar, even if you have to wait longer to get it.
Yeah but it's worth more to you because you had to work longer to get it, and you won't be able to replace it as fast as the person who makes more. The reason OKW tanks cost just as much as every other factions is to make the more valuable for OKW (and to justify the Vet 5 bonus system).