My mind cant comprehend this. The 4-12x actual magnification is 4.5-11.5x ok thats fine and all but what about the fact that the 3-9x actual magnification is 3.3-14.1x. The 4-12x costs $150 more I guess because it has an AO. Is the 3-9x superior?

I think you misread the stats! http://www.leupold.com/tactical/scopes/mark-ar-riflescopes/mark-ar-mod-1-3-9x40mm/ The actual magnification is 8.6x at max with a 14.1' field of view.

I guess it was just a misprint. Here's where it said that. http://swfa.com/Leupold-3-9x40-Mark-AR-MOD-1-Riflescope-P60891.aspx