I don´t think that wheel vs. pad is completly broken... but there are situations in which the pad seems to have more grip.
Or it is a driver problem concerning Thrustmaster...
Example: Bahrain Turn 2 & 3 Racepace in Customlobby online.
While in Quali the pace of 10 drivers have been in 8tenth of second... during the race it became 1 Sec/Lap.
When entering turn 2 ... me using Thrustmaster t300 with t3pa-pro pedals ... I could not push the throttle as fast as the pad user.
I always have to be more patient and wait otherwise... I spun.
So in my mind these differences between pad and wheel is only relevant when accelerating out of slow corners when there is wheelspin to expect.