This has nothing to do with the battle but just out of curiosity: what is Booster Gold's class in terms of power? Is he closer to Iron Man in terms of strength/power or closer to street levelers but with some upgrades? I don't know that much about the character and I've only ever seen 2, maybe 3 feats from him.
It all depends on who fights who. But if Hero team fight like this imo they have a great chance of winning
Despero vs . Quasar and Nova are imune to TP and work good in a team. Both have strong shields that can tank anything Despero throws at them. This fight won't take that long as TP is Desperos greatest weapon, and its no good here. They have enough Speed to hang with Despero. Also Quasar can BFR to Quantum universe where he is TOOA
Alan Scott vs. Alan is a monster and imo has the edge against both Warlock and Strange (small edge against Strange) in a single fight. But Alans power can be cut of like Mordu did. Classic Strange could do this with the help of Warlock
Here is where it gets tricky
Doomsday vsThor, Sentry and Gladiator. HP DD is a beast and he evolves. Sentry and Glads = 2 Supermen with no morals. Plus Thor, they should be able to at least stalemate him long enough for backup to arrive. He has yet to adapt to Thor and Sentrys powers.
SBPvsSurfer. In a straight out brawl, Surfer gets owned. But he has Strong TP, BFR, draining and can exploit weakness as red sun on SBP.
What stops Alan from mind-controlling Strange like he did Dr Fate?