Well, the PS3 I play with is at a board game cafe...and every time I turn it on, I am just guessing at buttons, but it just isn't very intuitive.  I have never had that problem about how to turn on a system with Nintendo or Sega.  
However, both Microsoft and Sony have given me that problem.
I have been looking at the designs of systems and I have to say starting the with Super Nintendo, Nintendo has done a fantastic job designing hardware to look pleasing.  Even the Gamecube is attractive on the eye and looks cool.  I even dig the handle.