Have you tested both on computers without any underlying hardware issues?
Well, I'm working on CS5 and CS6 (CC)
at home: Mac mini i7 16 GB RAM, SSD. HD3000, OS X latest
at work: Lenovo 12 cores, 16 GB RAM, HDD, Quadro 2000 and Win XP 64 (So movie making isn't an option.
&
Mac Pro, 11 GB RAM, HDD (RAID) 7300 GT, OS X 10.6.8
On Windows I have Illustrator and Photoshop crash on me (the scratch is on a separate drive) but it seems to be caused by the nVidia drivers for the Quadro card, it's constantly a hassle (At the moment only one screen of the two attached is working, the card won't see the second one)
On the Mac Pro, which I mostly use for Premiere and After Effects, I seldom have any crashes and it's a very smooth experience opening and using PSDs and AI files.
Only have had crashes when doing a lot of layers and doing "too much" not really a specific issue could cause.
The Mac mini is just a blast, never any issues or crashes, and I use most of what the Creative Cloud offers (It's for fun, hobby and a bit work).
So agreed, it's not compared to a modern Windows 7 with modern specs...but I did also say "IMHO"
