I feel like it's a bold statement to have LSSJ in the realm of SSJ3 *Cough Cough* SeththeProgrammer *Cough Cough*. In M10 he didn't outright stomp Gohan like some claim or tend to believe, Gohan to still put up a fight and made Broly struggle a bit, so I don't have him in the same league as the likes of Fat Buu, I could see either SSJ2 Goku or Vegeta beating him solo without too much trouble. So as a result I have a hypothetical SSJ3 Broly being stronger than SSJ1 or maybe SSJ2 Gotenks at best, but considerably weaker than Base Gogeta/Vegetto, Gohan, and SSJ3 Gotenks/Super Buu.
As for the topic of this thread I stand by him winning without too much difficulty.