Was Super Mario Bros. 2's Blur Effect - A Mistake?

[d21lewis]

To paint the picture, here's a shot of a level with the 3D turned off:

Now, here's a shot of  level with an identical background with the 3D turned on:

 

See how everything is blurry as hell?  That's the price we have to pay to have the foreground pop out of the screen (but only in this game).  I wouldn't mind but, of every 2D 3DS game I've ever played, this has the weakest feeling of "popping out of the screen" that I've ever seen.  Try Mutant Mudds or Kirby's Dreamland and you'll see how good this game could have looked.