Edit Decision Lists (EDL)s are pretty complicated. They reference time code on the source tapes so that you can recut your tape accurately using controlled machines, usually in an on-line session.
Avid Cinema doesn't read time code or durations. However, Avid's sister products Media Composer and MCX work with EDL's and timecode.
The Avid Cinema storyboard is just a reference to the amount of time each shot should be edited in your timeline. It doesn't reference which parts of the shot you should use as EDLs do..