Ramp Test - Zwift and the Companion show different tranches

I took pics of each screen. I was gassed at this point and I do not know if the differences appear at lower power levels. But see how the app is telling me to ride at 450w and the companion is showing 500? And then 540 and 600? You can see that the 500 in the companion is not even on the list in the app, the app has 505.