IMHO there's no reason why Germany has to be seen as "always losing" WWII regardless of the circumstances.
One of my favorite TL on this site is Calbear's Anglo/American Nazi War, a creative AH which uses a fairly common POD (the Germans winning at Stalingrad) to fully develop a fresh take on the Cold War (or rather, Warm War) between Nazi Germany and the U.S.
And being as AH is fiction first and foremost, I don't see the problem with having Nazi Germany win WWII as long as it is internally consistent, reasonably explained, and well-researched.
Even the most unrealistic Nazi-victory AH, such as Philip K. Dick's The Man In The High Castle, are the best for these and other reasons.
An excellent AH.com TL can include a Nazi-victory scenario and can still be well-written, interesting, engaging, etc.