I actually disagree. :) Other backup applications and some WordPress plugins for backing things up offer built-in restore functions. If my site actually did crash, I could either restore all of it from a backup or I could get WordPress, itself, up and running and restore the database from whatever tool I used to generate the backup. Given how easy it is to install WordPress plugins, I would be able to get WordPress installed, get the backup plugin installed, and then be ready to restore the database through the backup plugin in a fairly short amount of time.
DBC Backup 2 looked like a great backup solution for me, but I wanted to clarify the retore issue before installing it. I'm not saying you NEED to add a restore function, or anything, but was simply ASKING if one existed since the documentation about DBC Backup 2 didn't mention anything about a restore function (either existing or not existing) at all.