When Garfield and Maguire's characters meet Holland's Peter, they give a recap of all the people they've lost and moments they wish they'd done differently in an attempt to assure Holland's Peter they know what he's going through. Garfield's Spider-Man expresses sadness over not being able to save his love Gwen (Emma Stone), and Maguire's Spider-Man says that even though he killed the Green Goblin for murdering his Uncle Ben, he never felt better.
During the fight scene, Zendaya's MJ is falling from the Statue of Liberty and Holland's Spider-Man dives to save her, but he's intercepted by one of the villains. Garfield's Spider-Man steps into action and saves MJ in a very tear-jerker moment.
Holland's Spider-Man is in a fight to kill the Green Goblin after everything that he's caused. As he's about to slay the villain using his glider — the same way Maguire's Spider-Man killed him — Maguire's Spider-Man steps in to save the Green Goblin, and Garfield's Spider-Man administers the cure.