Some of my bikes are disc. Some are rim. I can lock the brakes and endo all of them, wet or dry. I'm the only person who rides my bikes, so I make sure they all work properly. I have had disc brakes that were scary bad. I have owned rim brakes that felt like someone had shoved a broom handle in the spokes. There's no automatic correlation either way. Wear is indeed a cited advantage of disc brakes, but then I've never worn out a rim yet either, and I'm a very heavy chap. Methinks the case is overstated in all areas of this particular debate, both pro disc and pro rim.