It just seems silly to criticize the last act especially when there's almost (or no) MCU or DCEU film with a good ending fight. I was meh on Man of Steel but honestly the final fight with Zod is the closest thing that springs to mind when I think "Wow" for final battles. Maybe Civil War... but it felt a bit anti-climactic.
If this was MCU I think I'd have it 8th or 9th best. Just above Cap 1.
If we're talking Fox or Sony, then of course Spidey 2 (not sure that even counts since it was almost 20 years ago) and Logan come into the mix... but Wondy still wins IMO.