Complex sentence: Quesada felt that 1987's "The Wedding!" story happened due to an editorial decision and that Jim Shooter mirrored events Stan Lee had planned for the Spider-Man comic strip in order to maximise any publicity generated.
Split into simpler sentences: Quesada felt that 1987's "The Wedding!" story happened due to an editorial decision. Quesada believes Jim Shooter mirrored events Stan Lee had planned for the Spider-Man comic strip in order to maximise any publicity generated.