I am new to this forum so please bear with me.

My wife wants a shelf (*in retro style*) in the kitchen and wants it as figure B on the image. <br />
Now is my question: <br>
Is there a difference in 'strength' (*meaning by that, holding weight*) between figure A or B.[![enter image description here][1]][1]

  [1]: https://i.stack.imgur.com/InnY3.jpg