It is often the case that the website has been written for the organisation as a whole (ICM is a good example) but the agent personally fills in information like their AAR page or their AQ entry.
WTF is a 'literary manager' anyway?
A literary manager works at a theater, selecting scripts for production.
I'd be interested in hearing thoughts on Abrams too. An agent from there contacted me and I'm surprised because my book--as far as I can tell--doesn't resemble what they publish.