The Vikings, via the NFL's top insider mouthpieces, have tried to send the message this offseason that they are going to have a true competition between Kyler Murray and J.J. McCarthy for their starting quarterback job. Consider us skeptical of that idea — or at least of McCarthy's chances of winning it. Murray has played seven seasons in the NFL, made two Pro Bowls, and displayed high-level play for periods of time. He's never had a passer rating below 87.4 and was at 93.5 in his most recent healthy season. McCarthy, in the ten games he played last season, had a rating of 72.6. His inability to reach a baseline level of competent play was a major reason the Vikings' season did not pan out. In order for McCarthy to win a competition between the two players, assuming both are healthy, he would have to take a truly massive leap from where he was last year in so many areas: mechanics, processing, decision-making, accuracy. It's not impossible and shouldn't be ruled out, but it does feel highly improbable.…