Will a Harvard Professor count a lot?

Dear CDers,

One of my friends told me that she had done some projects with a professor from Harvard.

Harvard professor wrote a letter of recommendation for her, the letter itself was good, more than 1000 words.

The question she has is that : Will a Harvard Professor's letter count a lot? Will this professor be a good recommender?

Thank you

1. A U.S. professor definitely has more credibility than some unknown recommenders from China.

2. A harvard professor knows how to write a good recommendation.

3. Harvard brand name brings extra credibility.

Conlusion: it should help your application.

unfortunately, is not mine but hers.

Thanks anyway!