If you are comparing the two tape courses, Sedona uses a more intuitive approach while Larry Crane uses visualization to introduce the process in the early going.
Also, the sedona method course has a few more bells and whistles...like for instance Hale Dwoskin is clearly using NLP-repatterning type language throughout all of the tapes (this is one advantage to having the tapes rather than just reading the book).

The presentation of some of the releasing processes later in the Sedona course borrows its methodology from "auditing" or "clearing" technology -- the same question is presented again and again, allowing deeper issues on a specific topic to release and come to the surface.

There is also the holistic releasing process which you can get in the bonus courses, but I have never tried those. I believe the concept is presented in the book by Hale Dwoskin.

Overall, I liked the Sedona method as an introduction to releasing, but the Larry Crane course was more effective for me in focusing on and achieving specific goals.