There is actually a comparison table here: http://wiki.bacula.org/doku.php?id=comparisons
, but it is specifically aimed at network backup software comparable to Amanda and Bacula. It's not exhaustive.
You can also look at the links here: http://www.linuxquestions.org/bookmarks/tags/backup
Personally, I like Amanda a lot, and it is what I use for a complex environment of servers with a tape library on a backup server. My backup server has multiple network interfaces to connect to a backside GigE network that my newer servers are on as well as the regular network where the older servers are on 100MB network. It juggles simultaneous connections all across the network pulling in backups to a pair of 300G holding disks before pushing them out to the tape library. It drives my tapes at maximum speed, because it is staged and that step is local.