One of the main arguments against using the 3-3-5 and having smaller but more athletic players on D in the big 10 was that they would simply get ran over by the Wisconsins of the league. However, with TCU giving the Wisky O fits with their speed on D there's more evidence to go against the argument of the "traditionalists" (though TCU runs a 4-2-5 I believe).
But there a few things to keep in mind as well. This was just one game, of which TCU had weeks of time to prepare for. Whether a proven D with this composition can sustain this level of play throughout an entire season in the Big 10 remains speculation (though we might find out next season with Nebraska). One other thing worth noting is that the Wisky receivers dropped numerous catchable balls that could've made a big difference throughout the game as well. Also I don't know if Clay was still banged up or what but he barely played until Wisky's last drive of the game and came in and steam-rolled everyone en rout to a Wisky TD; why the heck didn't he/they play like that until then?
Anyway, something worth noting that may or may not have any relevance for UM anymore now that RR is lekely gone. It is worth adding to the larger conversation of size vs speed, though. Curious to hear anyone else's thoughts on the game and/or the larger issue at hand.