How fast does the Corvette C7 8-speed 8l90 automatic transmission really shift?

This marketing bullshit has been going on since the beginning of 2014: +Tadge Juechter doing his expected bullshit song and dance about new 8-speed automatic transmission shifting faster than the highly praised Porsche PDK transmission.  So is this really the truth and the whole truth?

Here is the funny part: unlike +General Motors , Porsche readily discloses the shift time, 1/200 second..  This number has been disclosed voluntarily by Porsche and ZF from the very beginning and it has been proven many times over and over that it is the valid number.  Moreover, this number applies to BOTH MANUAL AND AUTOMATIC modes for PDK transmission, this part has been very well documented as well.

So how about the General Motors new wonder 8-speed wonder?  Not only has this number been ever disclosed but the mouthpiece Juechter never bothered to clarify if this "fast shifting" applies equally to automatic and manual mode and then if it applies to upshifts and downshifts.

So where is the actual clarification Tadge?  In the land of Nurburgring and Cd LaLa Land?  Must be...

Care to clarify Tadge?  If indeed any scenario indeed generates shorter shift times, can the transmission last an entire track event without warning light coming on and car resorting to a limp mode (is there a track limp mode set up)?

Again, actual numbers talk much louder and clearer than any marketing bullshit.  Time to man up, Tadge.