Not quite accurate
I have both an old mac that struggles to run OS X 10.2 and a BRAND NEW alienware top of the line PC running windows XP. My mac crashes once every couple months or so, and my pc? Just about every day. In fact I just called tech support to replace my CPU because, due to the components of my computer having probs with eachother, the CPU runs super hot for no reason. I've also had to have my hard drive, graphics card, and motherboard replaced because they can't seem to find the right parts to go with eachother. Is that alienware's fault? No, theyre rated highest in customer satisfaction when it comes to tech support. Try to find incompatable parts in an apple computer. You'll find it much more difficult. In fact, people have been running mac OS X since it came out and have not had a crash.
I am not pro PC or pro Apple. They both have their pros and cons, but no way is an apple a more unstable product than a PC. Do your homework.