I might be missing something big about EF, but as far as I know this request makes no sense.
We have some .Net WPF software that's meant to run on Windows machines; a client has request that we make a web application that does the same thing. We'd create the API, they'd create the HTML/CSS/JS monstrosity that would replace our XAML.
They then asked that we convert the already-existing code to use Entity Framework so they can load test our API. WTF?
(For those of you who don't know, entity framework is just an OR/M and has absolutely nothing to do with load testing)