Love my 13". I didn't know there was anything wrong with the Graphics.
If you don't think that there is anything wrong with your systems's performance... then there isn't
Don't let other people opinions spoil your fun.
Performance is VERY dependent on what you do. If you play call Call of Duty, your performance is down. If you use handbrake to encode video, I bet your performance is way up
I have a MBP 2010, I play Call of Duty and WoW on a 1920x1080 external monitor. It's not great but good enough for me. Thats often while a 2 GB VirtualBox VM with Window XP is running also. So I'm happy.
This is all just "banter" for most of us, most of the time.