How is this a competitor to an iPad or an Air? It is completely different to both of them. Unless it's because they are all computers with an OS and screens, in that case they're identical. In that case a Range Rover is the same thing as a BMW Z4, they both have wheels and people fit inside them.
I've read a lot about the iPad being heavy to use one handed. Holding 1.5lb in one hand out in front of you in the same position for an extended period, like when reading, is going to be a strain after a while.