I am not a fan of Powermatch and never use it. Luckily my PM is almost exactly the same (within 1%) as my Kickr Snap in Erg mode. I had a bad experience with powermatch on my ramp test and subsequently in many comparison workouts since. So I always use my Kickr’s ERG and record separately my PM to my bike computer. After each workout I compare the power profiles on DC Rainmakers Analysis tool and they are spot on.