I depends on how much #3 means to you as those are the big selling points... superior AF, as sharp as the 5d2 depending on what software you use, 2 card slots, better ergonomics, weather sealing, 100% VF, etc... Sensor wise, you can almost call it a wash, but $1300 for an entirely better camera system as a whole, you will have to weigh how much thats worth it for you. Also dont forget about the much better ISO capabilities...