Here are my thoughts since you asked, and I am even gonna use some of your own arguments. Summit has a strength of schedule that is ranked 8th right now. Fc's is 12th, so Summit has played a tougher schedule thus far and has the same record as fc. Therefore Summit's strength plus success rating is 36th while fc's is 40th. Summit with a tougher schedule has scored 109 points so far this year while fc has 20 more points with 129. The kicker for me is the fact that playing a harder schedule summit has only given up 194 points thus far and fc has given up 232 points. Now, all that being said Summit has played 6 teams that run a similar style of offense as fc does. fc on the other hand has only played 1 team with a similar offensive scheme and gave up 42 points. Since there are zero common opponents at this time to compare I am gonna have to go with Summit. I don't think fc will be able to stop them, and I don't know how many points they can score since Summit is getting used to seeing the spread.
So
Summit- 35
FC-14