Meh, Broly is pretty strong. I see no reason why he couldn't punch Thor and hurt him. But Saiyans, even though they are strong fast and produce attacks on Super Human levels (and sometimes stretch to god like (rarely)) They still can't breath in space, and are effected by fire and lava unless they use a shield. However lightning seems pretty ineffectual as you see Frieza being struck and not giving a flying fook. But all in all, regardless of strength and speed and such Broly looses from needing oxygen. And Thor not needing it.
Plus Broly is a movie villain and therefore doesn't exist! THOR POUNDS HIM LIKE THE WANK STAIN HE IS! HAHAHA!
#Brolyhate