you can see that their places aren't that high, but it's sort of expected for a debut and co.ed is a different type of artist you usually are seeing. and they're not from the 3 or 4 big idol companies (sm, jyp, yg and sometimes dsp). you can see though that their ranking has gone up significantly in all the charts (except bugs since it was released later than the others).

the reason for the high ranking on mnet (first one) is because co.ed was featured as the artist on the homepage yesterday.

cr: nathaniel @ coreclique + various charts