This. BvS was over-slammed (fair enough it was a let down for most) because it was too dark/dull. Its like these feckers haven't seen Watchmen. What did they expect from Snyder FFS
Plenty of dark movies do very well. Yes, some critics played on this aspect of BvS too much, but as the Batman trilogy proved, you can do dark/gritty and do it well. In fact, personally, I prefer dark movies. At the end of the day though, this whole debate is rather pointless because BvS was just a really, unspeakable shitty piece of film making. We all knew this would be the case, after hiring the director that brought us MoS, and the quite simply atrocious Sucker Punch. The fact they've kept Synder on for the Justice League movie, is all I (and I suspect many movie goers/fans) need to know, to be certain it will be another steaming pile of shite.
On the flip side, I'm not a marvel fan either. I find the costumes, acting, and plot lines excessively campy. As a comic book fan (ish), I also took umbrage that they underpowered key characters (Thor etc), just to make the lesser ones (ScarJo, Hawkeye) less pointless. Like when Ironman goes toe to toe with Thor, a God. Disappointing, but I understand why they do it for film making purposes.
For me, the two Marvel movies that knocked it out of the park, were GOTG and Deadpool. Antman, was also refreshingly light, you could feel Edgar Wright's quirky fingerprints all over it.
I had some hopes for SS, mainly because Ayer can be a decent director; so I'll watch it with an open mind.