OrinBM: Finally to my question, are the championship games harder
Yes, sir, they are. You'll find Champ green speeds to be very difficult on Merion and Oakmont as well.
Is that tournament set up with Yellow tees for you? If so, those are champion tees. From your description, it sounds like it. A few of the holes on Pinehurst play slower too, e.g. hole #4. Pinehurst has some interesting breaks right before the cups, too. Look at the breaks carefully from reverse view, take your time and then execute.
Take notes when you play these courses so you can refer to them as you go.
I totally agree with 8Buster8 above.
If you ever need advice, my door is always open. Post my wall.