I don't mind. Both of these fighters have more than proven themselves as valuable to the UFC and deserve the courtesy of refusing this one fight.
I don't see them making a habit of it.
Also, the outcome of either one winning just doesn't seem worth it.
Anderson gets both belts and then retires, leaving both spots empty? Also ruining his friend Lyoto's flawless record?
Lyoto gets both belts and then can't make weight to defend them both? or he just defends his own belt, for no reason other than to possibly allow his own belt to be taken and his record be flawed by someone under his weight class... Anyway he gets both belts, and puts a loss on his near equally untouchable friend's record.
Just give them this one.