Problem in game ... with clans being mismatched ...
Some people have found if they quit their clan before the cvc event shows up (it was at least 13 hours before but now I guess it has to be 24 hours before because of the 24 hour join another clan rule) and then join again less than 15 minutes before the cvc event shows up then their influence isn't counted but they , the member(s) whose influence didn't count get to have points count for cvc event. What this does is allow big people to quit clan and then join back so that their cvc opponent is way smaller. So if their clan is 100B influence and they have big guy(s) quit and then have a clan influence of say 22B and then rejoin less than 15 minutes before the cvc event shows up then they will have enemy cvc of about 22B and their big guy(s) points count ... so in effect you have a 100B clan against a 22B clan.
So seems that there is a lag in the time the match up of cvc's happens and the time that the members who are counted as being in the cvc happens. It appears the match-ups are happening earlier in the day than the cutoff for joining a clan and having your points count.