I've worked in cardiology performing most of the tests that people know: exercise tests, EKG's, angiograpghy, echo, holter etc etc
The fact that you know these details tells me that your doctor was using an EKG machine with auto diagnosis ie the machine gives out a guide as to what may be wrong.
Whilst these can be accurate, they can be notoriously inaccurate as "normal" EKG's vary from person to person and the machine cannot take this into account. They can also mis-diagnose if the electrodes were placed in the wrong places (which happens very often in doctors offices as they mostly don't use qualified technicians) or there was a bad quality recording ie artifacts.
In fact you soon learn that there is no such thing as a "normal" EKG. It can vary from day to day and definitely from person to person. I guess this is what keeps Cardiologists so busy - they need to use their experience and knowledge about your overall health and combine it with the test results to make a valid diagnosis.
Going to your EKG values:
Ventricular rate: 70bpm - that is text book "normal"
P duration: 100ms - again text book "normal"
QRS Duration: 90 ms - text book "normal" PR
Interval: 132 - text book "normal"
QT Interval: 404 ms - Hard to tell without seeing EKG trace, but very close to "normal"
QTc Interval: 419 - text book "normal"
QT Dispersion: 18 ms - seems "normal"
PRT Axis: 58 -16 -4 I'm not familiar with this measurement
So there appears to be a lot that is "normal" in your EKG. I haven't seen it, seen how it was performed and can't provide an accurate interpretation, but I would take a guess that the machine diagnosis is PROBABLY wrong, but you should definitely get it checked by a properly qualified cardiologist.