SUNRISE, Fla. — A win like the the one the Florida Panthers pulled out Tuesday against the Ottawa Senators is the sort of luxury the best teams get to enjoy. Paul Maurice was blunt about the way his team played in Sunrise — “We just weren’t really good,” the coach said, before admitting he “was grasping at straws” with some lineup changes in the third period — and still the Panthers were never really in danger of losing to the lowly Senators. They led for more than 48 minutes, got to overtime despite blowing a two-goal lead in the third period and finally pulled out a 3-2 win with a highlight-…