Re: Will Superman have a new costume in Man Of Steel Sequel?
Zod, Faora, and the other Kryptonians had just arrived on Earth and hadn't absorbed a lot of solar radiation or become accustomed to it. That's why they needed the helmets and armor, and why they couldn't fly or shoot heat vision, etc. Zod figured it out eventually of course. It's not unreasonable to conclude that their speed might have been affected in a similar way. Plus, some people were already complaining that the action scenes were moving too fast and were hard to follow (I had no problem with either) so can you imagine the reaction if the Kryptonians moved even faster.