At the very beginning, instead of having a partner choose a startup they want to join, Sequoia lets the startup choose a partner they'd like to work with. This creates for a better dynamic that reduces complexity and let's the team to work faster.
Furthermore, Sequoia partners are not allowed to display bad manners. Everyone pitching them is ought to be treated with respect, recognizing that founders are there to do a hard job.
Lastly, they do not seek credit (just money).