HOUSTON — The line of thought goes like this: There’s no reason for Derrick Rose to return this season because these Bulls can’t compete with the defending NBA champion Miami Heat even with him back on the court. That’s one popular argument when the subject of Rose’s return arises, but Heat players and coaches don’t see it that way. “They are an absolute contender,” Heat coach Erik Spoelstra said. “It was such a shame that Derrick got injured last year. As a competitor, you never want to see anybody go down like that. They had the No. 1 team in …