Apples and oranges. Not comparable. If you want a wagon buy a wagon. There aren’t many to choose from, but there are still a few.
By the way, I’m with you. I prefer a wagon and am avoiding the SUV/Crossover craze like the plague.
If you have to choose between the Audi and the Lexus, I’d vote for the Lexus as less expensive to own over time.
Good luck.