I'm more critical of dc films because:

1) I'm a DC fan and know more about their characters than most marvel characters outside of x-men and spiderman. For better or worse this makes me critical of movies because I hate seeing characters that I like taken out of character to the point that they are unrecognizable (ie. Superman that kills in a non-injustice storyline or batman that kills and uses guns)

2) I've seen good-excellent DC films and TV shows from Christopher Reeves Superman, Tim Burton's Batman, Nolan's Batman, Wonder woman TV show, and the full arrowverse. So the bar has been set and it's high.

Not saying I'm not critical of marvel films because I am harder on spiderman and will be hard on any wolverine remake (Hugh Jackman nailed that role). But honestly most marvel films I go into I have little to no expectation because of no prior investment in their characters.

How about you, which brand are you more critical of and why?