I use Revo Uninstaller Pro and if I am correct, Evidence Remover is a feature that lets us erase a given number of particular data so it cannot be recovered. In other word, it is the same as TuneUp Eraser, without the context menu (right click) option. I am not sure which algorithm is implemented, though. While Unrecoverable Delete exterminates all data from drive partition at once. But I must remind you to not try Unrecoverable Delete unless you know what you will be doing.