for more Asian soccer discussion, you may join here http://www.bigsoccer.com/forum/forumdisplay.php?f=103
that should be the best English forum for Asian soccer with a lot of Chinese,Japanese, Korean Iranian and Arabia also fans of other countries, You can follow ACL, K-League, J-league, CSL, IPL and some other Asian competations there.
and for super powers of Asian club soccer, clubs from Korea, Iran, Saudi arabia, Japan, China, Kuwait,Qatar and UAE are competitive in Asian club soccer.
K-League: the strongest korean club is Suwon sumsung current now, other Strong clubs in K-League are seongnam Chunma, Pohang Steelers, ulsan Hyundai and Seoul FC
J-League: the most succesful clubs are: Verdy Tokyo 1969,Yokohama F Marinos,Kashima Antlers & Jubilo Iwata
CSL: the four biggest clubs in CSL are Dalian Shide, Shanghai Shenhua, Beijing Guo'an and Shandong Luneng
IPL: Perspolis and Esteghlal are the two giants in history, paas and sepahan are strong teams too now.
Saudi League:Al-Hilal ,Al-Ittihad ,Al-Nasr ,Al-Shabab are always strong.
UAE League: Al-Ain
Kuwait League: Al-Arabi & Al-Qadisiya
In ACL this season, Five clubs had already entered quarter finals and still have three places to be decided, the five clubs who had enterd quarter finals are:
Al Ittihad (Saudi Arabia),Al Ahli(Saudi Arabia), Pas (Iran),Shandong Luneng(China), Busan I’Park(South Korea)