Hall is obviously a better marathoner...
Except for that one time when Ritz beat Hall in the 2008 Olympic Marathon.
Oh, and 2012 when Hall dropped out, and Ritz ran a solid 10k.
Oh, and when Ritz beat him in 2003 at NCAA XC. And 2000 Footlocker XC.
Hall is doing a better job marketing himself, but Ritz is the superior runner.