The 3DS will do very well for itself, of that I'm sure. But I still maintain that I will not bother with a 3DS until a 100% compatible flashcart is developed for it. I'm done buying video games that ultimately disappoint me. If a flashcart never happens on the 3DS, then I'll never get one. Simple as that.
I also didn't care for that talk of "always on" WiFi. I NEVER use the WiFi on my current DS other than very rare web browser use.
Then there's that deal for me where unless I hit the lottery or something, I'll never be able to afford the operation to put an artificial lens and iris in my bad eye (car battery explosion in 1991) to restore my sight in that eye, so I'll never see the 3D effect is has anyway. I'll have to take a pic of myself someday so you guys can see my bad eye.
As far as the 3DS games.......that didn't look "near the power of an PS3 or 360 to me", that was obviously BS. It's Gamecube or Wii graphics at best. That's good enough for a handheld device though. Sadly, I didn't see any shmups being mentioned other than them showing a Starfox ship floating by.