i went in to order a cam and was stumped by all this, so i did a little further research to find the answer, and here's what I found.
from a post here-
I emailed Web Cam recently and asked them for the specs on their replacement for the stock 914 camshaft and they replied:
"These are the specs on the stock cam:
.302 @ the cam on the intake ( 7.67 mm)
.283 @ the cam on the exhaust ( 7.19 mm)
Duration @ .050 intake is 210°
Duration @ .050 intake is 206°
Intake opens -3°
Intake closes 33°
exhaust opens 31°
exhaust closes -5° "
You also have to consider the rocker arm ratio.---
I found another post which said Porsche specs are measured at .040, not .050. That's what the Haynes manual calls out, so the numbers are different, but in line.
the yellow card from your pic calls out duration which is measured at 0 lift, so that could align as well.
so we're dealing with three different ways of cam measurement, that's where the confusion comes in.
It would appear you have close to a regular fi cam.
and the hotter webcam 73 for comparison is out at 224deg. duration.
I feel better now.