I do definetly prefer butts. If i remember correctly, pornhub made a chart on something like this, showing wich countries prefered tits and wich prefered ass. It also showed that the majority of the world prefered tits, altough not by a large margin. Americans were shown to prefer butts while most European countries were shown to prefer tits.
A great man once said "Ass can compensate for a lack of tits, but tits can not compensate for a lack of ass."