My reading is as many others very different. I read it more as them actively targeting the players of the number 1 rpg, providing them something sufficiently different that it warrants the jump, while also providing a playstyle niche that has no big-name presence due to the 4ed taint.
They have been very explicit about hoping many will have this as their second game; not their third
PF2ed might be a tactical combat game; but it feels much more of the "select your next ability" style. Draw steel is a tactical positioning game. Think FF1-10 vs FF tactics. I think the two approaches speaks to different crowds. As such I think PF2 and DS can quite happily co-exist.