I think that both teams are essentially mirror images of each other but if stats are to be believed, ECU should win:
http://www.ncaa.com/stats/football/fbs
-ECU has the edge at QB.
-ECU has the edge in passing offense.
-ECU has the edge in rushing defense.
-ECU has the edge in scoring defense.
-ECU has the edge in red zone defense.
-ECU is the least penalized team of the two.
-ECU has the better TO margin between the two teams.
-ECU has the better 3rd down conversion ratio.
-ECU has the better 4th down conversion ratio.
-Marshall has the edge in rushing offense.
-Marshall has the edge in passing defense.
-Marshall has the edge in red zone offense.
I have no idea how our teams match up with each other in the Special Teams categories.
ECU has the stronger SOS.
Regardless of what the stats say, this will be one hell of a tough game for both of our teams. May the best one win!
(and may that team be Pirates)