94: "Mr. Brightside" vs. "I Write Sins Not Tragedies"

In 2005, it sucked seeing your girl with someone else, and the two dueling kings of Las Vegas bands had feelings about it. But who wrote the superior jealousy song, The Killers with "Mr. Brightside" or Panic! at the Disco's "I Write Sins Not Tragedies"? 

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