Charlie's career would probably have been very different if Eric had lived. He would have been just as successful I am sure, but his films just would have been a lot different with Eric around, he probably would have made more films like the Mutuals, with Eric as the comic heavy, and plots centering on this. I think Charlie would have kept Eric around, on payroll, and there would have been much less pathos-oriented plots, and more emphasis on physical, rowdy comedy with some pathos thrown in. Just my opinion, but we'll never know! I wonder how The Gold Rush would have been different with Eric as Big Jim instead of Mack Swain!