Neither guy is in the Big Ten, but Flo has Marsteller (31-1) and Chad Walsh (20-1) at #11 and #12, respectively I understand they haven't had as many Big Ten opponents, but they both seem kind of low in the rankings at 165. Massa and Wick both have 4 losses. And Wanzek has 6 losses. 165 might be even tougher than 141 this year.
Strength of Schedule or RPI really hurts both of them. Although 31-1 and 20-1 looks very strong, they don't really have any strong wins. Also, in Marstellar's case, he lost to Steiert, and due to his redshirting this season, it sets him back. In the case of Walsh, his loss is to Marstellar, so he is forced to sit behind him.
Walsh's best wins are Bethea(2x) and Schleifer. Bethea is ranked 17th and Schleifer 19th on FLO, but neither are even ranked by Intermat.
Marstellar's best wins are Walsh and Romero(ranked 16th by both). Another strong win(2x) he has is another guy that is redshirting, Mekhi Lewis(28-2). Lewis is sitting behind McFadden at VTech and is 28-0, not counting Marstellar.