Bill can you confirm on the G8, that sport mode is Pattern A?
I noticed some 1->2 shift mph settings on Normal Button, but also on D1 and D2. I am wondering if Sport Mode really uses D2 and Pattern A isn't used? My Pattern A was set to 36 mph, but log shows it going 1-2 right at 30 mph (set in Normal) every time...it does look like it tells the TCM to shift to 2nd, but it doesn't happen right away, it takes a long time (relatively speaking). It does look like it tries to complete the shift just under the RPM setting feels more like a target to me...my RPM were set 6100, every time it peaked 6000-6050.
I'm going to do some testing to see what MPH it uses in Drive vs. Sport and I'll post up the results, but it may be a few days.