Compared to Sheffield I mean. There's a few that are the same, but Sheffield generally do have better universities I think. Though anyone at Sheffield, feel free to correct me.
Hmm, Sheffield don't have theirs on their site. I'll go look in the booklet; here we are, Sheffield's (I don't have time to include the macrons I'm afraid):
(In Tokyo)
Chuo
Hosei
International Christian University
Keio
Meiji
Rikkyo
Seijo
Sophia
Waseda
(In Kyoto)
Kyoto National University
Doshida
(Elsewhere)
Akita
Hiroshima
Kanazawa
Kobe
Nagoya
Otaru University of Commerce
Ryuku
Yamaguchi
Yokohama National University
That lists starts off with "...inlcude", so maybe there's one or two more.
From looking at that, it seems the partner Unis are better.