I found these pages while browsing and thought they might be a useful reference as to what Konami soccer titles are available and on what platforms.

WINNING ELEVEN/PES SERIES:
http://www.geocities.com/winningworld/we_series.html

PERFECT ELEVEN/ISS SERIES:
http://www.geocities.com/winningworld2/pe_series.html

Hopefully this should clear some confusion and debate.