Well, the area where the user uses their phone obviously affects both the iPhone 3GS as well as 4. So if a user has 1/100th the number of call drops on the 3GS,

Well, the area where the user uses their phone obviously affects both the iPhone 3GS as well as 4. So if a user has 1/100th the number of call drops on the 3GS, they will see a smaller increase with the iPhone 4, i.e. less than one percentage point. The “average joe” user will experience the increase given by Jobs. And finally, those who drop several calls a day with the 3GS will likely have returned their iPhone 4 already.