It's not bad, just mostly redundant these days, as the heuristic features are no longer enabled, and the defaults ublock lists will cover a lot of the same.
Privacy badger doesn't require somebody to add an address to a list to block it, it figures our statistically when something should be blocked. The upside is that it can block things that are new and haven't been added to a list. I assume it could also better adapt to new methods to get stuff through a typical blocker.