Comparison of resolution and artifacts for high-contrast targets. Note that the crops have all been converted to grayscale, so colour moire won't be visible here. Note also that not all crops have been sharpened to the same extend: I don't own all these, so I just tried to minimise artifacting with each. In fact, the actual resolution and degree of artifacting doesn't depend much on sharpening settings.

ACR is Adobe Camera Raw, RML is Raw Magick Lite, RSE is RawShooter Essentials 2006, C1 is Capture 1, RT is Raw Therapee, NX is Nikon Capture NX.