I wish Apple had acquired NIK (instead of Google) and integrated their plugins into Aperture as core capabilities. Their dfine (noise reduction), viveza (selective control point editing), and silverfx (b&w) tools are better than anything else I've ever seen. Once you use Viveza, you realize the folly of applying an adjustment to the whole image. Rarely, if ever, is that a good way to adjust photos.
Been saying this forever. If Apple had that suite of controls built in as RAW instructions there'd be no contest between it, LR, and C1.