Lastly, I am unsure if how many board game units sold is any real useful data. It was popular during a time when you played board games or didn't play wargames. But today with computers every bit a real option, the variables and conditions are just not the same.
A good board game, poorly ported to computer, will not sell just because it was based on a good board game automatically in my opinion.
I wish I remembered the sales numbers from a few years back. I recall they were mentionned on the WiF mailing list. Someone had misunderstood and thought Harry must be a millionaire with all the sales of WiF Deluxe. The obvious problem was of course that those sales numbers were for all versions and modules combined (WiF 1 to FE, FA, DoD I-III etc.).
That problem will of course count for CWiF as well. Many veteran players of WiF own multiple copies of the game, or at least multiple versions (I own WiF 4 and FE, 3-4 copies of DoD (I & II) etc.). At least in the first time, even the most devoted players probably won't buy more then one copy of CWiF. On the other hand, a gaming group that used to play with a single copy might have to buy multiple copies of CWiF (this might need to be taken into consideration, maybe offer multi licensing). Then obviously not all who bought WiF FE will be interested in CWiF (some still don't own a computer, others might consider buying WiF FE a mistake and don't want to invest anymore in a game they don't like). On the otehr hand, some players apparently decided not to upgrade from WiF 5 to FE, those might now be willing to buy CWiF. Other gamers yet never bought WiF in any form because of the game's physical size, time needed to setup and play or the extent of the rules. CWiF will not have that problem, or only at a much lower level, accordingly those players might chose to buy CWiF now (that's also the category needing a tutorial ai).
So at least from my outsider's perspective there is no way to tell how large a market CWiF might attract. Even having the sales numbers of WiF would not help much in that aspect. On the other hand I really doubt that many non hardcore wargamers will be attracted to CWiF (maybe some players of HOI or such, simpler, games will try out CWiF).
Marc aka Caran...