MoS was okay at best but not great since I'm pissed off at origin movies. BvS was terrible except for Affleck and Gadot. SS was kinda meh.
MCU has IM3, Thor 2 and WS that I didn't like.
Just on the bigger amount of movies that I like Marvel wins.
On the quality of the first few against each other - IM, Thor, IH and CA:TFA vs MoS, BvS and SS Marvel wins again.
To me, Marvel has always been about the characters first and setting second. How they interact, deal with the story together and how the story affects them over the course of the movie.
DC seems to be more about the story. Show how things get done, these characters do them and occasionally dump characterization on everyone. Like showing for the billionth time Bruce Wayne and his parents in the alley or spending a minute or two in background elements on the people in SS. That's never been interesting to me.
When I read/watch superhero stuff, I want to know the characters first then see what happens to them. I don't want all sorts of stuff happening then try and guess what the peoples motivations are from the few seconds between them beating each other up or the next explosion.
This goes for both of them - Stop killing people off for shock value and bringing them back!

It's annoying.