just want to share, i've played around with the viewport settings for my responsive design, if i set the Max scale to 0.8, the initial scale to 1 and scalable to no then i get the smallest view in portrait mode and the iPad view for landscape :D... this is properly an ugly hack but it seems to work, i don't know why so i won't be using it, but interesting results
<meta name="viewport" content="user-scalable=no, initial-scale = 1.0,maximum-scale = 0.8,width=device-width" />
enjoy :)