Why do UChicago's rankings diverge so much across different ranking systems?

Colleges & Universities University of Chicago
4

<p>Just a note: one of the Shanghai-Jiaotong’s ranking’s metrics is “Nobel Prizes and Field Medals won over the last century.” The ranking looks much different without that metric.</p>

<p><a href=“http://www.shanghairanking.com/Alternative_Ranking_Excluding_Award_Factor/Excluding_Award_Factor2014.html”>http://www.shanghairanking.com/Alternative_Ranking_Excluding_Award_Factor/Excluding_Award_Factor2014.html&lt;/a&gt;&lt;/p&gt;