Dual releases never work I guess . But a song with crossover potential probably should be released first
If we ditch those country and pop radio thingy, it would be perfect if the single chronology of Speak Now is like this: Mine - Back to December - Sparks Fly - If This Was A Movie - Ours
Or Mine - Back to December - Sparks Fly - Haunted - Speak Now
But she's a 'country-pop' artist so she need to please both country and pop. The disadvantage of being a crossover artist.