Lane conditions are often quite different overseas than here. I understand the typically-Asian helicopter release was developed to combat extremely spotty and dry lanes over there. Mika Koivuniemi's characteristic loft is supposedly due to frequently burnt heads but with some oil downlane.
Additionally, tastes in balls (eww?) in the Asian markets is different from the US. More frequent releases and, according to Brunswick, particular color choices are the norm in the Far East. Many over there prefer to buy new, "fresh" equipment rather than continue to work with older stuff.
SH