Au contraire!
There is infact a, shall we call it 'technical discrepency'.
I decided to run some more thorough tests after that new bit of information about wind heading (thanks btw). Now thus far
The smoke and clouds move in the correct direction when the wind is reported at a heading of 0 or 180, +/- 5 degrees
or so, which is correct.
However, anything outside of a heading of ~ 05-355 or 175-185 will result in the smoke flowing the correct direction. The
clouds on the other hand will not properly reflect this.
Example: (using the 'Borneo Convoy' mission still)
Wind is at 15m/s with a heading of 150 degrees, so therefore blowing toward 330.
The funnel smoke is modeling this correctly, and is being blown toward 330.
But the clouds are incorrectly moving toward a heading of 30, instead of 330.
Thus it looks like that yes the devs indeed got the smoke modeled correctly, just not the clouds.