I hear you, but predicting who gets the last 1 seed is closer than you think. Currently, Mizzo is ranked 3d -- with 3 losses. If they beat KU on the road, they're in, period. The #1 seeds would then be Ky, SU and Mizzo with the 4th 1 spot up for grabs. If KU wins, IMO the 1 seeds will be:
Ky
SU
KU
Duke/UNC
You definately have a good argument that MSU deserves that last spot if they beat OSU. But the ACC (probably Duke) has a helluva good argument:
1- Duke/UNC have better records (4 losses vs. 5 for MSU), and Duke has a slightly higher RPI than MSU
http://statsheet.com/mcb/rankings/RPI
2- Both Duke and MSU have recent big-time road wins, Duke at UNC and MSU at OSU;
3- Duke has another advantage because it just beat #16 FSU on the road;
4- MSU's 3 road losses look worse than Duke's OT home loss to UM. and its loss to FUS.
In the end, I think it will come down to whether MSU can beat OSU at home tomorrow, and Duke can beat UNC in Durham on March 3. I don't think conference will be the deciding factor. If both teams win these big games, my gut tells me Duke gets the nod.