There are actually many threads that have come to the conclusion that resolution and/or aspect ratio have an impact on mildots. I for one get about 10% more mildot size than in your chart (the height*1000/mils formula) and it makes me wonder if those 1.80 meters might just be be wrong. Who ever came up with those? Can anyone verifiy it? Obviously there is a large margin of error when you're estimating if that tiny soldier is 2.6 or 2.7 mils tall, with a shaking crosshair no less. So my own numbers won't be anywhere near 100% accurate but they would mean a standing person in arma2 is more like 1.95 meters tall.