the issues of running firefox on a SSD(i.e. netbook) have bee well addressed: https://help.ubuntu.com/community/AspireOne/110L#Speed%20up%20Firefox
you just have to get your hands a little dirty
what specific design choices in chrome makes it faster than Firefox, i.e. what caching/ database ect
TFA says notebook, i.e. a laptop, (but don't put it on your lap or you'll sterilise your little solders with the heat)
a netbook is the small cheap low power device which you are thinking of.
this is a subtle distinction to do with marketing
Faith may be defined briefly as an illogical belief in the occurence of the improbable. - H. L. Mencken