Which sentence uses language appropriate for an informational article about the Civil War published in an academic journal intended for professors of American history? I visited the site of the Battle of Antietam and learned from one of the tour guides there that it is kinda unclear which side really won the battle.

The Battle of Antietam, one of the bloodiest clashes in the conflict, is today considered by scholars to have ended in a stalemate.

The Union said it won the Battle of Antietam but, all things considered, it was really more like a tie.

You could read one guy and he'd say that the Union won the Battle of Antietam while another dude would tell you that actually the rebels won that one.