I'm gonna have to agree. This being a action superhero movie, you need just that, Action!
Which this kind of lacked. Maybe not focus so much of the attention on that one scene between those 2 characters. Use bits and pieces of other scenes, in addition to that scene to build a brief narrative of what the movie is gonna be about. I'm not saying you need to go all Michael Bay or anything with quick MTV style cuts, but for a trailer it certainly helps. From an editor's viewpoint, if you don't mind some constructive criticism that is.
If i had to dissect your trailer. Considering I don't know what other shots you have to work with and I know you don't want to spoil too much like most trailers do.
I would probably start by holding onto that cityscape shot longer before it cuts away to the text that says: THIS SUMMER, (which personally I would just ditch altogether)
-The movie is about the guy right? So I would replace that dolly shot of the woman with a shot of the guy, the hero. (preferably looking out over the city like she's doing)
-And then show a series of action shots, not just one shot of the car drifting around the corner. Because the next text says: WHEN THE CITY FALLS, (show more urgency of danger than just that car shot) HE'LL FIGHT FOR US (but yet you didn't show any fighting.)
-Then introduce a quick synopsis of the story using the dialogue in the movie using multiple scenes (either showing a piece of it or using it as a voice over) not just the one, like i mentioned earlier. Because to be frank, I didn't really know what was going on with her dialogue. I'm sure I would if I saw the whole context of that scene because as it is now, something's missing. Show some tension, show a big threat. Show why he's fighting to protect the city, etc.
-More action. The last shot should be your most epic shot.
-As far as the text goes. Rule of thumb is essentially to hold onto text long enough for your viewer to read it. I would also probably either change the font to something that is easier to read, make it slightly smaller or pull the tracking on it in, so that it fits in the screen more.
-Your music was barely audible. Make it louder. Get our attention! Maybe needs more cowbell.
- The audio on the dialogue needs to be cleaned and sweetened up more too. You need to stamp out some of that "NAT" Sound. Dialogue sounds kind of flat and hollow. Needs to sound bold and beautiful.
But yeah. Other than that can't wait to see it!