The Dallas Cowboys are staking their claim as the best team in the NFC. While a swarming defense and Tony Pollard’s rise as an elite playmaker are undeniable pieces of this ascension, the most important factor may be the man behind center. Dak Prescott has shaken off an ugly start to his 2022 season — a terrible showing against the Tampa Bay Buccaneers in Week 1, which included the broken thumb that cost him five games — to reclaim his place at the center of the Cowboys’ offensive universe. Sunday’s game was Prescott’s best of the season, a 22-of-25 performance…