Homecoming's drop really isn't weird at all. The vast majority of MCU movies were released outside of summer, so they have a big advantage when it comes to the second weekend drop. We literally only have 3 valid comparisons for MCU movie released in the midst of summer: GotG, Ant-Man and CA: TFA.One thing I'm not getting here is the weekend to weekend drop. With all the critical acclaim & good WOM this movie generated, one would have expected SM:H to hold a little better. As it stands, it's the biggest drop for an MCU movie in it's 2nd weekend. It's basically acting like a front-loaded sequel. War took a bite but was it really a good chunk of SM:H's BO?? The demographics for both movie are totally different. I thought both were going to co-exist and bring in big money for the weekend.
It dropped more than Ant-Man and GotG, but those were the two leggiest MCU movies, so no surprise there. It's about on par with CA: TFA, while opening much higher. And CA: TFA's multiplier is higher than the average MCU multiplier.
If you confused by this drop, you probably don't really understand the differences between a July movie and a May movie, and why a movie will have a bigger second weekend drop when it gets released in July as opposed to May. It really isn't rocket science if you look into it.