Interesting point - that we are all not on attack lists equally - that some of us appear more than others. I must confess he's almost never on my list either...
Because it really made no sense. Statistically, if you attack more you should have more revenges. His offensive attacks were over mine significantly so right there he should have had more attacks on him than I did from revenging opponents. And if anything a Prisoner should REDUCE the number of attacks and revenges I get.
Just more mystery in the magical world of (supposed) RNG...