40k lacks priority, and of all the rules, priority is the biggest uff in AoS IMHO.
That said, 40k has its own idiosyncrasies, as the shooting nature of the game combined with first turn often ends with an insurmountable lead for one side unless your list is built around deferred deployments. I don't think AoS has nearly the same issues of a shooting emphasis. But then again, Disciples of tzeentch are still a thing. But there's not really a good way to play around the double turn, or plan for using it as opposed to playing around going second, and so many sigmar armies already have those tools to ensure a less devastating first turn.