The background of this question is wether the distribution of the block generation does matter? Lets say we have a period of 12 weeks. If the number of blocks created in this time is 6*2016 then the difficulty should not change. If the number of blocks is (6*2016)*1,1 (10% more) the difficulty what have risen 6 times by 10%. This both statements should be true if the generation of the blocks is (more or less) equally distributed over the time.
I wonder now if this is true for different distributions.
I know there are this limits in difficulty adjustment (4 and 1/4) but if they are not reached it should be possible?