asanal wrote on May 10^th, 2010 at 4:52pm:

No, we can expect from developer to be accurate to RW as much as possible...

That is the key.  Even some of the most accurate add-ons are simply limited by FSX coding.  For example, the Bae Jetstream 4100's turboprops characteristics and behavior can not be 100% modeled in FSX.  Yes, I would love for the 727 to have more accurate EPR correlation with the RW performance data as well, and hopefully that will happen.