I hate to be "that guy" but I think somebody should come in and establish a roach species this discussion is about, considering there are many commonly available with varying attributes. I'm assuming we are talking about b.dubia here, and yes they are an excellent feeder overall. The only major problem with them is that they seem to understand their place on the food chain, and are quick to hunker down and hide. This is probably the only area in the comparison where crickets have an advantage, otherwise dubia roaches excel in every other area as a feeder.
Interested in the following (only looking for stellar stuff)
0.1's: s.taeniacuda, o.coggeri, n.levis, n.amyae, p.rangei, g.orientalis, c.angulifer, d.galeatus