Winning Eleven and International Superstar Soccer are completely different franchises, but Knoami always sucked with naming and localizing their titles, so we have a mess in our hands. KCEO made ISS, which had a different name in Japan which I don't recall right now, it was a hit on the SNES and Genesis, and they went on to make N64 titles, which follow the same core ideas, and later on they went to the PS2 where the IP died. KCET made Winning Eleven, localized as Goal Storm, then Winning Eleven '97 which was localized as both Goal Storm '97 and ISS Pro, then Winning Eleven 3 was ISS Pro '98, and Winning Eleven 4 was ISS Pro Evolution, in the PS2 era finally Winning Eleven 5 was localized as Pro Evolution Soccer.
The last time names were different was with Winning Eleven 10, which was PES 6 in Europe and Winning Eleven: PES 2007 in the US, an attempt to combine both names that didn't stick. After that it was named after the year and the rest is history.
