Here you see the Batman firing a projectile at Superman and he catches it. But the big question in my mind is, did he intend Superman to catch it? I know in previous storylines, there have been various projectiles fired at Superman. One of them (from Green Arrow) was of course a Kryptonite arrow. In addition, the Batman has crafted kryptonite gauntlets before and beaten Superman that way. It kind of makes me think they might be employing some comic book trickery to get around Superman's formidable powers.
But it's also possible that the Batman could have found magical gauntlets too. The introduction of Wonder Woman basically introduces magic as that's basically what all her weapons are. The sword she wields was forged by Hephaestus so it can cut Superman's skin open no problem. It'll be interesting to see how the film explains everything that's going on here, and I gotta say that I'm getting pretty excited for this. We haven't even seen any Aquaman in the trailer, and it's confirmed that he's making an appearance in Batman vs. Superman as well. If you haven't watched it yet, take a looksee because it is jam-packed. This is either going to be a complete mess or one of the greatest comic book mashups ever.
I guess it just depends on how much faith you have in Zach Snyder.