I've been meaning to make up a new set of benchmarks for AE CC / C4D Cineware. That one is still fairly relevant but is over a year old and will only test your GPU. I want a series of tests that will stress multiple aspects of AE such as SSD cache times and frame retrieval, cineware rendering, element 3D rendering, RAM, CPU and GPU.
George, I have the latest MBP with the faster i7 quad core and I can tell you it's a beast. It's faster than the quad core mac mini (3.6 ghz). Don't have a comparison vs an imac but I can imagine it's pretty comparable.
good luck
-TG