The 70% you see in the PP column is a rounded number, so it could still be below 70%.
He missed the 70% mark in 3 games, that alone would get him upset.
The 70% PP is for the whole season, averaged on a per game basis (i.e., you can play him well above 70% in the beginning of the year and 'slack off' at the end and he won't get mad).