I think you have it backwards. I have no need to justify my iPad Air purchase. I skipped the 4 and went from 3 to Mini to Air. It is more like 4 users justifying NOT upgrading. Either way, pointing out improvements is not putting the others down. If the others feel put down, that's their business.
I don't have anything backwards, I'm simply replying to how your tone comes across on screen.
It's a common sight on many forums when something new comes out, there is always someone who feels the best way to "feel good" about their purchase is to run down the outgoing model and brag about their new toy.
I have already said I cannot justify going from a 4 to an Air for two very important reasons. Firstly, I bought an iPad 3 then an iPad 4 the following year due to the performance issues with the A5X and Retina Display. The stripped down version of iOS 7 on iPad 3 has justified that decision. Secondly, I've just paid £2000 for 7 days in Sorrento, Italy next year with my wife for our sixth wedding anniversary so I quite happily and unashamedly admit I am unable to afford yet another new iPad. That's not to say I
want an Air and would have bought one had I not paid for an expensive holiday, because until I see my iPad 4 considerably slow down I won't consider upgrading again.
As I said, some people have this way of enjoying their device that it involves needing to brag on forums about how great and powerful their new toy is and how now poor and under-performing the out going generation is. These people get as much, if not more, enjoyment out of telling others how good their device is rather than just using it.
Remember the old saying, "Don't let your possessions possess you"? I apologise if that's not your intention but that is exactly how you have come across.