I think the low end chromebooks are very diff from the high end. the one linked here is basically a netbook that doesn't run windows but chromeos instead (ie you can only use chrome stuff). 4GB of ram and 16GB of ssd, low rez, slow cpu, it's pretty crappy ;-)

The high end has good specs - even thus it runs chrome os, at least, it'd make sense to convert it to windows or linux if chrome os was too limited. It's also a lot faster.