i think the best i can do in terms of comparison is
jds vs mir title fight... 560k buys
silva v sonnen title fight... 925k buys
the event in the middle had one top 10 fighter on the whole card (wanderlei and rich franklin were on it, but both coming off patchy performances and at a catchweight where there is no top 10)
ufc 147, no title fights, no top ranked match ups.... 260k buys
...what does anyone want but to feel a little more free?