Not sure what reports you're listening to. From what I've read, Russell is playing well and Tapper has flashed.
All of these guys are still developmental but are showing some promise.
Russell is playing well, showing some speed off the edge and is utilizing a variety of moves, killed Doug Free with a sweet spin move yesterday.
Tapper is better than advertised, will need time to develop consistency and technique but has already demonstrated speed and bull power with ability to capture the edge.
Irving is raw but is learning to use his length, he needs technique work in terms of hand placement but is quick off the edge, he may have something in the rotation to offer.