Because I've heard of less issues with the PC version? Please.
Most of the issues you hear concerning the PC version aside from strictly game-related problems are either:
1. Pirated OS, pirated game, both.
2. System in a state of disrepair. "What's defrag?" Haven't downloaded latest drivers, or video card is 'off brand', too old and out of date, system infected with some kind of virus or spyware, etc
3. Hardware meets minimum but expected to play smoothly with moderate/high settings.
4. Misc background programs and services using system resources which make smooth gameplay impossible. (Skype, Messengers, Antivirus, on and on)
5. Poor configuration (botched overclocking, inadequate cooling, etc)
I could go on, but most capable machines will run this just fine. Nvidia/ATI drivers will continue to update, which should resolve even more issues. With console there is next to nothing to maintain, but if a PC is not attended to properly it can mean poor performance.