Please see my comments here:
https://www-secure.symantec.com/connect/forums/can-i-use-besr-its-own-backup-software
The Granular Restore option for Exchange and SharePoint is an option you have purchase. No granular restoration of SQL items is yet available.
The big difference is that BESR is better suited for
en masse distater recovery of a completely dead server. The bare metal restore option for BEWS is really only good for restoring to the same sytem if memory serves me correctly.
Also need to add that BESR is not capable of backing up to tape medium. Hard disk based mediums work best with BESR where speed is concerned. I believe optical media is supported, but I have no experience backing up to optical media with this product