SSR's Granular Recovery Option will work only for Exchange, Sharepoint and Files & Folders.
BE's Granular Recovery Technology will work with Exchange, Sharepoint, Files & Folders, SQL and Active Directory.
BE has agents for other applications such as Lotus, Oracle, Hyper-V, VMware, Linux and Mac. It supports multiple destination devices such as Basic Disk, DeDuplication Disk, Tape etc. It has multiple options such as offhost backups, synthetic backups etc.
Lastly, both products are available as trial versions. Unless you evaluate the product, you will not know the differences between each product and you'll also find out which product is more suitable in your environment.