BB took place in 2005 as Nolan said, modern take in modern times. SV takes place in the present also. During the summer that Batman Began, Bruce is near his 30s.....SV's Clark just turned 18. It doesnt fit at all. Theyre universes just dont mix well. Theres only one real choice: From an interview with IESB in 2005, Bale said hes down with it but it wont happen for a long while till Batman is established. Brandon is asked about it alot, and he said as long as they arent fighting each other for the whole film (ala Batman VS Superman script) hes down with it. DC comics president Levitz stated the need for this to eventually happen, but said both Superman and Batman must first establish themselves on the big screen first. I see it happening after both franchaises do about 2-3 films each.