X fans, what are you trying to accomplish in this debate? I've mostly only heard you implying that X is better than UC because their schedule is more difficult. I hope you understand that there is no logic in this argument. Schedule strength is not an indicator of a team's skill level. At all.
The only thing one can say about UC and their weak schedule is that it's too early to tell if they are as good as X. Unfortunately for you, there are common opponents to examine. As has already been pointed out, UC is 3-0 against these opponents with an average margin of victory of 12.7 points; Xavier is 2-1 against the same opponents with an average margin of victory, if you don't include the loss in the calculation, of 7.5 points. If you do include the loss, the margin slims to 1.3 points.
There is no argument to be made that X is better than UC currently. There is no argument to be made that X is better than UC over the entirety of their programs. Arbitrarily choosing some intermediary time range (last 10 years, last 15 years) is witless unless you're making the case that X's future looks brighter in the near future, which I would vehemently disagree with but realize the case can be made. If that's not your intention, it's just cherry-picking stats to make your argument appear to hold water. Everyone knows the last few years have been some of the worst on record for UC, and that they have been some of the best for X. With that in mind, how is re-stating the obvious at all germane to this discussion?
I said above that there is no argument to be made that X is better than UC currently. Don't take this to mean that I think Thursday's game might as well not be played. There are 2 tenable positions to argue: Either UC is currently better than X, or it's impossible to know who's better until Thursday night. I hope you would agree to the fact that there is no evidence supporting X's superiority over UC this season. If you do, what the hell are you talking smack for? Inferiority complex much?