Babidi would have his men kill #17 and #18 since they can't get any energy out of them. Kaioshin and Kibito would likely come to intervene, likely taking Gohan and Trunks to the Kaioshinkai to train until they're strong enough to pull out the Z-Sword and later, strong enough to stop Dabura. By that time, Earth's population would likely be completely wiped out, so one of two things happen; either a hopeless ending where Gohan and Trunks have nothing left and decide to just stay as Kaioshin's attendees, or Gohan remembers about New Namek and asks Kibito to bring them there with Kai Kai.
In the latter scenario, they revive those killed by Babidi's men, aside from #17 and #18, along with all the Artificial Humans' victims. Peace is restored to the Earth until Black and Zamasu show up and kill everyone.