Where are the other 15 shows?
My collection shows 6288/6314. My 26 show difference is down under Advanced/Hidden filter.
Cards chosen to be hidden (under manage card options) are hidden from your collection show display by default (but still show their number in total show count).
Marking a card to "hide" is not a filter, but you can choose Hidden as a filter to see the cards you've marked to hide.
Cards chosen to be disabled, still show in your collection show display, but are greyed (?) out.