Broly vs Great Ape Baby (on 1 condition)
the condition is that Broly was alive during the 20 or so year time gape and has powered up. if you don't know why it's a 20 year time gape, it's because Broly made his initial appearance during the 9 days between Goku and Gohan getting out of the hyperbolic time chamber and the Cell games (more or less).
fastforward 7 years to the Majin Buu/fusion/Kid Buu saga(s) and then fastforward another 10 years to when Goku fights Uub at the tournament. then a couple more years later passes by and we have DBGT.
so it's about 20 years if you add it all up.
still think Broly loses to Great Ape Baby?