As the title says, what would happen?
For my to cents, I believe Denmark would still lose just as badly as it did in otl.so I'm more curious on how this would effect Scandinavian nationalism, would a shared defeat help unify Scandinavia, maybe agents Germany aggression?
I also remember there was a chance for a Danish Prince to become the king of Sweden at some point during this period (but I can't remember the exact date so I mite be off base with this one) so Maybe if Sweden and Denmark have a shared sense of defeat would help that along as a first step for a United Scandinavia?