It's not the final ranking. Once a 1-loss mid-major hits #15 (without a super-tough schedule) -- it doesn't go much further than that. An undefeated mid-major with a soft schedule won't go much further either. In the end, the final ranking is going to be pretty close between ECU & Marshall *if* both win out the rest of the way (and Marshall's CUSAC win).
But again, it's not the final ranking. It's how the selection committee sees it -- not the voters on the outside.
I'm sure they'll look at the Raw BCS ranking scheme (without voter poll influences) and compare the two. Usually, when you near the end of the season, 0 losses is a bigger deal. But I don't think that will be the judge though -- just an influencer.
COMPILED Rankings of 106 Different FBS Rankings PROCESSED FOR A FINAL RANKING (Taking Mean, Median, and Stnd Deviation):
#21 Marshall
#33 E Carolina
Of those, the ones I've heard of before (besides AP & Coaches), here are some:
Sagarin
#35 Marshall
#45 E Carolina
Massey
#34 E Carolina
#36 Marshall
Pigskin
#26 Marshall
#33 E Carolina
Stanford
#26 Marshall
#38 E Carolina
*EACH TEAM'S HIGHS AND LOWS IN POLLS/ALGORITHMS OUT OF THE 106*
(I counted a bit quick so I could be off by a couple in a section, but you get the idea)
Marshall:
Top 1-10: 19
Top 11-20: 26
Top 21-30: 25 (2 are AP & Coaches)
Top 31-40: 9
Top 41-50: 6
TOP RANKS: #4 (ECU: 49), #4 (ECU: 26)
BOTTOM RANKS: #52 (ECU: 39), #71 (ECU: 36)
BEST TEAMS BEAT: #64 UAB, #71 Akron, #75 Rice
WORST LOSSES:
No Losses
E Carolina:
Top 1-10: 0
Top 11-20: 5 (2 are AP & Coaches)
Top 21-30: 20
Top 31-40: 53
Top 41-50: 22
TOP RANKS: #16 USA TODAY (MARSH: 24), #17 (MARSH: 21)
BOTTOM RANKS: #54 (MARSH: 31), #64 (MARSH: 10)
BEST TEAMS BEAT: #34 VaTech, #74 UNC, #108 South Florida
WORST LOSSES: #39 South Carolina
Website Link:
http://www.masseyratings.com/cf/compare.htm