The warm up is very weak.Balder has Class 50 strength, superhuman reflexes, agility and durability.He's a master hand to hand combatant, and close quarter weapons user and especialized with sword fight.He carries an enchanted sword created from Odin which gaved it to him as a prize for his attitudes, plus his standard Asgardian armor, more durable than man made metals.
Bat and Cap will try a close quarter fight relying on agility rather than brute strength, but come on, outfighting an Asgardian god who has millennia of battles and physical stats above you?Without PIS or jobber auras, they lose.Spidey and GR MAY, a big MAY, slow him down using Oliver's special arrows, like the sonic device one, and the glue arrow, but they will gave him few minutes of advantage, and Spidey hasn't the strength to drop on him a building or something to really knock him down.War Machine armor has considerable firepower, and the design rocks, and the aerial advantage is the main point here.Balder knew every inch of Asgard, he could chase WM through rooftops and then land on his back and cut through the armor and rip it apart.
Then we have Diana.In a sword fight, he'll be able to gave her a great battle, and incapacitate her, considering sharp weapons powered by sufficient force can hurt her badly, but Diana has on her side a FAR superior strength, flight abilities, and don't forget the lasso.I say Balder can do it only with a lucky shot, so his quest for the apples stop here, but hey Diana has nice apples too in that costume...