I'll be honest I haven't seen Man of Steel yet. It's on my to do list. Anyway, when the movie came out Lego gave us 3 movie related sets. Unfortuneatly all three sets have the same Superman and Zod.
For my money the middle set is probably the best deal. Plus you get Lois Lane. If all you're interested in is the Superman and Zod I'd say just grab the smaller $12.99 set.
The Superman is different from the 6862 Superman vs Power Armor Lex set. Which is currently the only other Lego set to feature Superman that is not movie related.
On to the minis. Every minifigure in this set has two faces to pick from.