I'm sure of two things:
1. iOS7 will evolve (7.1... 8.0, etc.)
2. new iPads will come out, one day they will have more ram.
As I am one of the people annoyed by safari's behavior thus far (and to note, this doesn't happen to me with other apps, I think one game crashed to home for me once, so it's probably just safari's bits that need some tweaking) the iPad Air is so far and away above the competition when it comes to overall user experience that this annoyance doesn't stop me from using it obsessively everyday, I just hope it gets sorted out sooner rather than later.
At this point you couldn't pay me to return it, I'm too dependent on the device and platform for my everyday wants and needs. If you made me go to android I'd cry like a baby, been there done that and not going back. (to think I could have had an iPad 2 instead of a Moto Xoom angers me, I made that choice based on specs alone and I'll not do that again..)
If Apple said sorry, Safari will crash to the home screen on average once a day until a new iPad comes out, or for 6 months until we get the bits sorted out, I'd say Apple, that's really annoying but I'm keeping mine anyway.
Sure, I could stick with an iPad 4, I did that for 2 or 3 days and realized the value proposition was silly for me. I like the feel of the 4 better, but the usability of the air, the one handed hold while the other types and speed, you just can't beat it.
I hope the OP went to a 4 or a 3.
You can't play the spec game with iOS vs android, it's about the experience at the end of the day and IMHO nothing really comes close at this time. Believe me, I started on android (an Evo, a Nexus S, a Galaxy S2 (biggest crappiest phone I've ever used in my entire life), a Xoom, a Google TV, etc).