From "14,463.37 $KWENTA the first week and drop to around 200 $KWENTA at the end of four years" we have inferred a decay of 2% a week

KWENTA can be vested immediately for a 90% penalty. This penalty decreases linearly to 0% after 1 year. As we can't tell how many, and when, vesters will exit early, we have excluded this mechanism from our analysis.