Thanks for the love :)
For the games that support it, the 'widescreen hack' coupled with the 'Aspect Ratio=Window Size' renders it in the full width of the screen, 24:9 format. Since Wii games natively only support up 16:9, it is a 50% increase in "viewable space". The AR of this setup is modest. I have seen Dolphin run some Wii games properly in Eyefinity 3x1L 48:9 (200% increase) just fine. Maybe Duniek will try some crazy 288:9 AR just to see what he can break :)
You don't get any expanded Vertical FOV or anything, just a much much sharper rendered image, as clean as the developer's programming engine allows. As shown in the video, any 2D raster sprites in Dolphin just get straight scaled, and quite frankly, (can) look like hell.
As for the 12 megapixel comment, I really have no clue what you're saying/asking...unless you're implying I am incorrect.
Arguing on the internet can be fun, but arguing with math isn't, because you'll always lose.
8 screens, 4W x 2H -- 1600w x 1200h pixels each. So:
4W x 1600 = 6400 pixels W
2H x 1200 = 2400 pixels H
6400 x 2400 = 15,360,000 pixels
1 megapixel = 1,000,000 pixels
15,360,000 / 1,000,000 = 15.36 megapixels
...I really can't break it down any simpler than that. Where in the world are you coming up with 12?