* Parallax scrolling (B3D advantage)
How is this a "Blitz3D advantage"? * Pixel perfect collisions (is this supported for 'sprites' in B3D?)
Nope. But you seldomly need *pixel perfect* collision. Vector perfect will usually be more than enough. (Even if you're working in 2D). I assume the approach when using B3D for 2d games is to create sprites using textured rectangles (2 triangles)?
Yup, that's pretty much it.