No,
I've not measured a high impedance 'scope probe on a VNA (which is typically intended for 50R systems). I'm away from home on business so won't be doing so any time soon (I have a number of VNAs).
When HP / Agilent / Keysight say the probe input impedance is 2M2 in parallel with ~12pF I tend to belive them. I cannot see where you are getting a RESISTANCE of 60 Ohms from.
As it is close to the reactance of the "missing" 6pF on your simulation maybe it make little difference, but surely, lacking any other data your simulation should use the published 2M2 in parallel with 12pF values for the 10073C?
Robert.
