you guys have to remember oricon is not really the final say in anything. kumi's "stay with me" sold 2.5+ mil but it did pretty crappy on the oricon. a lot of people prefer to buy digitally now.
it's just a chart position though. of course we all wanted her to be number 1 but this isn't ayu, it's our kumi kuu! she didn't have some amazing streak to uphold
though i am kind of speaking too soon, the world may flip upside down and tegomass may drop way below kumi. but .. i don't think so