The original Broly, who explicitly got far stronger from movie 8 to movie 10, was killed by a rusty SS2 Gohan, SS Goten, and base Trunks. Meanwhile, Fat Buu, the weakest of the Buus, was so incredibly powerful that it was stated SS2 Goku, SS2 Vegeta, SS2 Gohan, Kaioshin, SS Goten, and SS Trunks all going at him at the same time wouldn't make even the slightest bit of difference. So no.
His clone, which per guidebooks was just as strong as the original (presumably the movie 8 original rather than movie 10), had trouble with SS Goten and SS Trunks. No Goku, Gohan, or Vegeta needed. They'd have defeated him outright conventionally if they weren't concerned with saving bystanders.