According to this article that appeared in the New York Post, when President Barack Obama met with Republicans, he was very candid with them. Among the highlights: He told them that they can't just listen to Rush Limbaugh if they want to work with the Democrats in Congress and the new Administration; he reminded them that he won'; and he told them that he would "trump" them with his victory if they opposed his policies.
Here are some quotes from the article linked to above:
"You can't just listen to Rush Limbaugh and get things done," he told top GOP leaders, whom he had invited to the White House to discuss his nearly $1 trillion stimulus package.
In an exchange with Rep. Eric Cantor (R-Va.) about the proposal, the president shot back: "I won," according to aides briefed on the meeting.
"I will trump you on that."
Not that Obama was gloating. He was just explaining that he aims to get his way on stimulus package and all other legislation, sources said, noting his unrivaled one-party control of both congressional chambers.
Here's a difference between Obama and Bush. At heart, Bush was inherently not self-confident, so he had to bluster and bully to make up for his lack of self-confidence. At heart, Barack Obama is extremely self-confident, so he doesn't feel any need to bluster and bully. Therefore, he can deliver messages such as those quoted above without coming off as being mean or rude. It is, all in all, a very important character trait.