This just hit me as I was watching the post-battle results while credit farming. Both are premium tanks, the shells are roughly the same in price, and I use the same consumables. Somehow the Löwe seems to make credits out of nowhere, while to run a Renegade actually costs credits if you play a bad game.
What is the difference? I could literally go AFK in a Löwe and make more credits than most tanks.
Just a random thought.