Was it supposed to be presumed that Braniac destroyed Krypton?
When I think about it makes sense. Why else would he not want to help anyone on Krypton escape? He was just going to collect Krypton's knowledge and then destroy the planet. Like he did all those other planets.
Kelloway: Doyle, get in the car.
Doyle: But I ordered Onion Rings.
Kelloway: Doyle!