I got bored. Here's the FAA Inspectors handbook.

http://fsims.faa.gov/PICResults.aspx...regulation=all

Decoding FAA speak, it looks like the way the FAA counts SIC and FE towards the 1500 TT requirement doesn't make ICAO happy. And the FAA will grant the ATP with less than the required hours of PIC. But I see no relief if you don't have 1500 hours.