You may have a point, ThunderPeel.
I think the chart may be a good start to a dialogue about expectations. Out of that random 28-day sample, he got what he wanted 3 times. I don't think that's an abnormal frequency, but if he does, it's worth bringing up as a couple. And hard data is easier to assess than emotional whims like "I don't feel like I get my way very much." Because he may be thinking of the 25 days she said no, while she's thinking of the 3 days she said yes, and memory is hard to quantify. So yes, the table is a good approach to dialogue. But it's not evidence of a bad marriage.
As a woman, I can think of several rebuttal tables I might present in response to it. Like... number of times I didn't shower until the next morning because the kids used up all the hot water. Maybe you should get around to installing that bigger water tank??

And of course a table of my own unmet needs. Like... number of times I asked you to take the trash out and a list of your excuses.