At Brisbane on the first morning bowling to Ryder and Taylor he was getting the ball to regularly move into right hander and away from left hander. Granted he doesn't seem to be able to do it on demand or get it to move as appreciably as his away swinger, but he does have it.When has Pattinson showed he can get it to move both ways? I've only seen out-swing/seam from him and they haven't been as big as Cummins was able to get in SA. Whereas Cummins HAS shown the ability to move it both ways, watch his spell against Prince.
Pattinson has less control than Cummins. He might be hitting better areas in his last 3 innings whereas Cummins has been more scattered, but that's because Cummins is that kind of aggressive bowler and he knows what hes trying (bouncers or yorkers). When Pattinson strays just a bit he becomes easy to play, not with Cummins.
But I agree with that Cummins has a more difficult action, but there is no doubt he is far more talented.
I disagree re the control too. Cummins' direction is generally pretty good for a guy of his age, but every now and then (especially later in spells when he's a little tired) he seems to totally lose his **** and produce the odd full toss/very wide delivery..witness his spell at J'burg before lunch on whatever day it was in the second innings. It doesn't seem to happen regularly enough to be a huge pressure-killer and I'm confident that as he gets fitter and refines his action he'll eradicate it, but he just generally doesn't seem as polished and consistent as Pattinson just yet.