I'm impressed they did it without Ai, I thought their singles were going to sell 20k-30k after Ai and Gakki's graduation. But I'm sad too for Ai, though they got #1 with Shouganai Yume Koibito they deserved better sales too...
Edit:
It has been a great year for H!P acts
S/mileage - Please Miniskirt Postwomen
36,570
șC-ute - Kimi wa Jitensha Watashi wa Densha de Kitaku
46,096
Berryz Koubou x șC-ute - Chou HAPPY SONG
54,196
Morning Musume - One·Two·Three / The Mantenrou Show
106,341
But no new record for Mano Erina or Berryz alone