Downloaded the demo and took a short look at it. It doesn't feel (or look) like an automatic fit.
Think it will take some time to getting to understand how it all works and then how it will play. No doubt a lot different from the wargames I usually play (Combat Mission series by Battlefront).
Haven't looked if there is a manual attached to the demo yet, so I don't yet know if I have to find out for myself how to command, steer, attack etc. or that there is additional info in the demo. But in the coming days I must be able to find some time to figure it out !
BTW, is the big difference between Harpoon CE and Harpoon 3 ASW the fact that the former looks a bit better, is probably easier to learn, but is only singleplay (against AI) ? Is there a difference in quality of the AI ? For which are more scenario's around ?