SCD2's are still pricier than Acekards. In the end most flashcart competition comes down to price. How many times have you seen a gullible chump come here with his shitty clone cart and complain about it? He probably bought it because it was cheap. Hell I bought a R4 as my first cart a while ago because it was cheap, and that was back before Wood R4 too. Back when the best compatibility you had was YSMenu.
I don't even see the point of the SCDS2 myself. I can now buy a R4 that uses Wood for like what, $6? SCDS2's are like 5 times that. Wood gets good compatibility and can play most every game out there. So can whatever the SCDS2, but why pay so much more for it?
For the emulation and video features, I don't really see the point. Tons of people own devices that can do those better than the DS, even with the DS2. A PSP, an iPod, even a lot of smartphones.
In the end I buy a flashcart to pirate games. I've owned flashcarts for a good couple of years now (well, I had a R4 but I gave that away once I got an Acekard) and I can honestly say I've done little outside of use them to pirate DS games.
It's like handing someone a Swiss army knife to cut their bread. It's cool that it has all these things on it, but all I need to do is cut the loaf.