I think you read the numbers right.
At 4 MPH wind, the numbers say you'd be better off going with the deeper front.
At 8 MPH, you'd be better off going with a disk...unless you use the 50% degradation estimate.
Again, this is all with old, stale yaw data. The latest wheels may differ. I ended up choosing the Jet 60 front over the 90 because I was sure I could use it in just about all wind conditions. If I had unlimited funds, I'd choose a deeper front wheel (or HED 3!) for low-wind days, and a mid-deep, easy handling wheel for windy days. As, JM says, I'd always choose the rear disk.
"100% of the people who confuse correlation and causation end up dying."