I'm ok at landing (got my 50 realistic CTA landings trophy
) but I often crash simply because I'm trying to get on the ground before the other guy and cut it too fine.
But in a nutshell it's just a controlled stall onto the airfield lol.
Arcade landings aren't hugely different from any other difficulty, but the time it takes you brake is a lot shorter. So if you're used to landing on arcade make sure you leave enough room to come to a stop on higher levels!
I was quite impressed at the damage model the other day too - there I was, capturing an airfield having broken off one of my wheels. It was awesome. Luckily I didn't get any grief off the OpFor, and needless to say I had to "bail out" when I was done capturing. Looked pretty cool on the external camera though.