Nope, I'm not wrong and you just proved me more right with more extreme examples where you push the boundaries. No one is asking to run an Air as a replacement for a Pro workstation where you deal with large data sets and complex filters and no one expects the Air to be equivalent to those.
But the Air is quite capable of running of Photoshop CS5 to do what casual Photoshop users do. You know, the tasks that you could remove CS in front of the 5 and Photoshop could still do (yes, Photoshop 5.0, the thing in the 90s that ran on 32 MB of RAM and a Pentium 100 mhz computer.)
A lot of users over-estimate their computing needs. I get that you are all Pro-level artists that work Photoshop day and night and don't have an image file smaller than 2 TBs, but really, why are you applying your niche needs in pro-level editing to someone asking about casual use ?