This debate will never be settled but it is still fun to have.Wayne's stats cannot be measured. He is by far the most dominant statistical player of all time, arguably in any sport, and there is no taking that away from him. More importantly, he truly revolutionized the game; before Wayne, forwards rarely, if ever, considered curling back to the blue line as they rushed into the offensive zone to hit a streaking winger on the other side of the ice while the defenseman (or men) awkwardly moved in no man's land, covering neither Gretzky nor the streaking winger (Orr opened the door to this but Wayne kicked it down). That play was exploited for everything it was worth and is pretty much dead now except on off-angle odd-man rushes or in rare circumstances by special players (i.e., Crosby et al). This is just one example of how Gretzky altered offensive philosophy - and this is a separate thread in itself - but he truly changed the way the game was conceived. Before Wayne, most great players were known for their goal scoring prowess. After Wayne, passing became the truly great player's calling card. Even without his video game numbers he would be on the short list for greatest ever for this accomplishment. That said, anyone following the NHL over the past 30 years knows the greatest changes n the game occurred between approx. 1987 and 1997. In addition to better training (the quality of play from 1980 to even 1990 is grossly improved and noticeable even to the casual observer), the influx of great European players, bigger goaltending equipment and sophisticated defensive adjustments to the style Gretzky largely introduced, further expansion led to "clutching and grabbing". This defensive "tactic" is sometimes confused with the Trap, which is a legitimate defensive style, because it is often employed by teams of limited talent that also used the Trap. However, the clutch and grab differs because it allows lesser players to compete with guys they have no business being on the ice with because refs are reluctant to call 20 penalties a game. This is the era Lemieux played his prime in and what led him to call the NHL a "garage league" in the 90s. Basically, Mario really had only 5-6 years of what we know as 80s hockey. By contrast, by that time Wayne had already put up his sick numbers and was aging gracefully.My point is this: Wayne was a genius of the game but he benefitted from a perfect storm of timing and teammates to achieve the stats that many cite in their argument for him being the GOAT. But when it comes to ability as a hockey player, Mario beats Wayne in every category except possibly vision and passing and even in those areas it is only a slight advantage to Wayne. After 30 years of watching I have yet to see a guy as good as Mario. In fact, I have yet to see a guy that is even that close.