Why don´t these figures match up?

[Crumpp]

No where in the document does it say or imply WWII flight testing for the most part was NOT sophisticated.

Read it Tagert. They used analog instruments and the same things homebuilders use in their garages today.

Not quite the sophisiticated testing regiments in use today. They did lay the foundations of what we use today but only in general terms without the detail. The testing of enemy designs was especially rudimentary as they lacked the logistics for long term support of a design to maintain optimal performance.