Okay, if anyone cares, I think I figured it out....basically you want to play the level on either Very Hard or Insane, that way your wingmen are good enough to take out the first Moloch and the first wave of fighters. You still need some luck to wipe out those Seraphim before they hit the Nebtuu, but it can be done. So, if you do save the Nebtuu, the Gibborim never jumps in and you get some help with the rest of the fighters. But, either way, when you finish the level and jump out, you will get "You did not have authorization to jump" message.
Anyway, lots of fun!