The problem with Worst is he died to quickly to know how good he actually would have been long term.
If Mika Immonen had died back in his prime when he was winning the World 9-ball championships and US Opens he would have become a legend and people would say to this day "had he survived he would have dominated pool".
If Johnny Archer had died after winning his second World 9-ball Championships he would have been considered the most dominate 9-ball player to live given how hyped he was back then.
If Yang had died after drilling Orcullo for the second money match in a row? He would be seen as the best ever and people would say he had been destined to be a multi-time world champ. Instead he lived, lost some worlds matches, and became a fisherman.
The problem with the above guys? They lived and they were proved to be human. Worst died after peaking for a short period of time and people have assumed that he would have remained that dominate forever. Only thing is, very few players ever do... Every year in pool there is a new phenom that takes the world by storm, Chang, Ko, SVB, Orcullo, Yang, Appleton, Shaw, Wu, ect... only thing is most survive and come back down to earth.
Worst peaked and became the worlds best for a short period of time, as many players do. Unlike most players he then died and left a bunch of people in the pool world thinking he was destined to dominate pool for the next 20 years if it was not for brain cancer. More then likely he would have been another great player who came and went like most of the others before and after him. The guy was already pushing 40 when he died, he was fairly old in pool years, most players peak well before their 40's and Worst would have had a tough time staying at the top.