PHILADELPHIA — Tyrese Maxey was uncharacteristically blunt. Perhaps he was just being the leader he's been all season, setting the tone at the top for a message he wanted to trickle down to his teammates. Or maybe he was just sick and tired of hearing about how much better the Boston Celtics supposedly are than the Sixers. Maxey was asked whether the Sixers thought their first-round series with the Celtics would be more competitive than many pundits at the national level expected it to be. "Yeah, I could care less what they say. Honestly. I could care less what they got to say," he replied before the person asking could spit the question out. "We know who we are and we believe in the group that we have. We've battled with them all year. We battled with pretty much everybody all year. So, yeah, I could care less what the national whoever say. Whatever." It's not just lip service. He might be right. The Celtics are good. They have the formula to win at a high level in the regular season.…