SMU gave up 5 sacks to James Madison, who is a pretty good FCS team... but still... 5 is really unreal. I have a hard time looking at the SMU/ECU game and take anything away from it.
Now ECU's game against Virginia Tech and Florida is something to look at. I don't think Virginia Tech is all that good, but Florida is pretty good and ECU hung with them.
At the end of the day, this will most likely come down to who has prepared their team the best... coaching and then executing.