delta whiskey, you are a to**er of the first degree, and obviously do not fly anything that goes faster than about 80 kts
Think about your assertion of estimates being out by 7 mins.
Look at the time/dist between reports and consider how much the GS would need to vary then determine what wind variation would be needed to cause such a change in GS / estimate.
Mate I have flown all over for years and years and even with 170 to 200 kts I have failed to see a discrepancy in GS that would cause an estimate correction of that amount and I know a lot of JQ pilots and if they DID have that type of change in wind component, it would not go unreported.
I suggest you do the maths and reconsider your post.