premise: Pro Evolution Soccer 3 (known as World Soccer: Winning Eleven 7 in Japan and World Soccer: Winning Eleven 7 International in North America) is a football video game developed and produced by Konami as part of the "Pro Evolution Soccer" series. It is also the first in the series which was released on Microsoft Windows.
hypothesis: PES 2 was not allowed on PC
reason: We don't know the reasons in which PES 2 was not allowed on the system.