I have been watching the T20 Big Bash on star cricket which broadcasts some matches live
from fox sports and have watched all bowlers except shaun tait were clocking 120-140km/h
even guys like dirk nannes who regularly clocked above 145km/h in champs league ,ipl
were clocking 130-140.
Aamer who was clocking 130-135 in srilanka recently was been clocked at 135-152
by channel nine.
most suncontinental bolwers actually have been clocked faster in australia in recent years
and when they are clocked in subcontinent speedguns again so lower speeds.
in england skysports was doing the ashes and every english and aussie bowler were 140-150 ,even onions touched 150km/h but now english bowlers are clocking 130-140
in southafrica measured by supersportalso i have noticed in there speed guns shorter balls
are clocked quicker in sa while yorkers are generally clocked fastest in other channels
mostly i thing error comes when channels clock the ball when it hits the pitch,while
others like nine, sky clock at the point of release.