Let's start off with the PPV buy rate everyone loves to discredit.
03/16/2013 UFC 158 GSP vs Diaz 950,000
11/16/2013 UFC 167 GSP vs Hendricks 630,000
11/17/2012 UFC 154 GSP vs. Condit 700,000
04/30/2011 UFC 129 GSP vs. Shields 800,000
12/11/2010 UFC 124 GSP vs. Koscheck 785,000
03/27/2010 UFC 111 GSP vs. Hardy 770,000
08/09/08 UFC 87 GSP / Lesnar 625,000
BUT BUT GSP WAS ON DA CARD!!! It is a coincidence that Nick vs GSP was easily GSP highest buyrate PPV he's had besides UFC 100? UFC 87 had Lesnar AND GSP on the card and Nick/GSP demolished those numbers.
Now let me point out the weak ass cards Nick was put on compared to others.
02/04/2012 UFC 143 Condit vs. Diaz 400,000
04/26/2014 UFC 172 Jones vs Teixeira 350,000
02/22/2014 UFC 170 Rousey vs McMann 340,000
03/15/2014 UFC 171 Hendricks vs Lawler 300,000
02/01/2014 UFC 169 Barao vs Faber II 230,000
09/21/2013 UFC 165 Jones vs Gustafsson 310,000
10/19/2013 UFC 166 Velasquez vs JDS III 330,000
08/31/2013 UFC 164 Henderson vs Pettis 270,000
08/03/2013 UFC 163 Aldo vs Jung 180,000
05/25/2013 UFC 160 Velasquez vs Bigfoot II 380,000
06/15/2013 UFC 161 Henderson vs Evans 140,000
02/02/2013 UFC 156 Aldo vs Edgar 330,000
07/21/2012 UFC 149 Faber vs. Barao 230,000
08/11/2012 UFC 150 Henderson v. Edgar II 190,000
06/23/2012 UFC 147 W. Silva vs. Franklin II 140,000
02/26/2012 UFC 144 Edgar vs. Henderson 325,000
01/14/2012 UFC 142 Aldo vs Mendes 215,000
11/19/2011 UFC 139 Henderson vs. Rua 290,000
10/08/2011 UFC 136 Edgar vs. Maynard III 225,000
07/02/2011 UFC 132 Cruz vs. Faber 320,000
08/06/2011 UFC 133 Evans vs. Ortiz 310,000
08/27/2011 UFC 134 Silva vs. Okami 335,000
05/28/2011 UFC 130 Rampage vs. Hamill 325,000
06/11/2011 UFC 131 Dos Santos vs. Carwin 330,000
02/27/2011 UFC 127 Penn vs. Fitch 260,000
01/01/2011 UFC 125 Edgar vs. Maynard II 260,000
Well by sherdogs standards Jones and Ronda aren't draws. I guess by the looks of this list nobody is a draw besides GSP and Lesnar according to sherdog. Not to mention Condit vs Diaz was a weak ass card compared to most of these cards.