Hi FullWings,
I've just read that incident report at Melbourne:
http://www.atsb.gov.au/media/3532364/ao2009012.pdf and couldn't find anything about the lack of awareness of EPR mentioned.
What is mentioned is the take off weight error of about 100 tons wasn't trapped with:
Flight plan Expected TOW,
INIT B flight plan expected Zero Fuel weight entry,
green dot speed difference.
Larger than expected flex temp figure.
Even if the crew didn't have a "handle" on EPR, - N1 was still displayed.