The first four films of the MCU were as follows:
- Iron Man
- The Incredible Hulk
- Iron Man 2
While the first four films of the DCEU were:
- Man of Steel
- Batman v Superman: Dawn of Justice
- Suicide Squad
- Wonder Woman
Comparing these two franchises at an equal point in their lifespan seems more fair to me than comparing them outright.
That being said, which had a stronger start? The MCU or the DCEU?