Preparing Salsa with a Magic Bullet
The Magic Bullet is essentially a blender, and is, as such, inherently unsuitable for making a salsa.  

Also, the "seven-second" part of that recipe is a lie.  You're still going to have to peel the onions and garlic, remove the stems and seeds of the peppers, and trim up the tomatoes.

You're getting your knife and cutting board out anyway, so why not just do it by hand?  It really shouldn't take more that 5 minutes.