Oh, thanks god we got dxomark super-precise graphs and numbers reflecting ultra-real results, otherwise i wouldn´t be sure if i shoot with compact camera, DSLR or automatic shotgun.... but i rather re-check it on snapsort.com to be absolutely sure.
you can dig through photozone or tdp, if the results dont satisfy you. They wont have nearly as comprehensive of a list as dxo, but the conclusion is the same. In canonland, it's rare if a crop combo outresolves a FF combo. Once you have a high megapixel body, no way in hell does an APS camera keep up.
kenrockwell does a good comparison here: