"Ahu" are stone platforms on which many moai sit. There are 313 known ahu and 125 of these carry moai. The biggest, Ahu Tongariki is 220 m (720 ft), and had the most (15) and tallest moai.
I wouldn't compare myself to any past Idol contestant, because I don't feel like I am like any of them. Maybe stories are cool but my story is different from most people's story. I don't like to compare myself to other people, I like to just be me.