Why was the first speech style of Trump Congress judged as "no Trump"?

On the evening of February 28th, Donald Trump made his first speech in Congress, calling on democracy, * * * and the two parties to cooperate in the legislation of infrastructure investment, immigration reform and health care reform.

Specific circumstances:

The style of this speech is generally regarded as "unlike Trump": he did not deliver a surprising speech or use an aggressive tone, basically followed the content of the speech, and the tone of the speech was generally optimistic.

In this regard, some voters expressed surprise, and others praised Trump for starting to have a "presidential style." However, despite the call for unity by the * * * and the party chairman, the Democratic Party members in the audience remained unmoved, and the dispute between the donkey and the elephant was clearly divided.

Improvisation is one of the characteristics of Trump's public speech. The media noticed that when he first gave a speech at the joint meeting of the Senate and the House of Representatives that night, Trump basically followed the script.

Trump in front of the teleprompter seems to be much more convergent than usual, and he was a little nervous at first. He took a sip of water in less than five minutes.

During the campaign, Trump always put on an aggressive posture when he spoke. However, when commenting on this congressional speech, many media mentioned that although the speech was still loyal to the campaign promise, Trump's tone was much calmer.

In addition, the tone of Trump's speech in Congress is generally optimistic, emphasizing inner-party unity and advocating "the reappearance of the American spirit", instead of describing the pessimistic situation in such a large space as during the campaign and inauguration ceremony.