Spotting and unit quality - does it matter?

[The Coil]

Ok, tested spotting abilities of an HQ, an HMG, an LMG, an 81mm mortar, and a sniper, this time with the spotting units each moving to contact on a separate hidden squad. Test was conducted on a board consisting of all 'rocky' terrain.

Numbers given are average distance the unit spotted the hidden squad (the higher the number, the better the unit spots), the farthest distance it spotted the squad from, and the closest it spotted the squad (over 5 trials)

HQ: 109.4m (avg) 118m (far) 105m (near)
HMG: 116.4m 121m 110m
LMG: 112.8m 122m 107m
81mm: 117.4m 122m 114m
Sniper:110.8m 120m 103m

Again, I'd call that 'no effective difference', especially since no units best spot is worse than any others worst, and the span of spotting ranges is pretty darn close across all the unit types. Maybe you could make a case for mortars and HMGs spotting a bit better, but at best it's a pretty insignificant difference (8% or so, maybe), and I suspect it'd go away if I ran a more statistically significant number of trials, but I got bored at 5...

So, to sum up:

1) The spotting unit's quality has no effect on its ability to spot.
2) There's clearly a random element to spotting, and it is apparently fairly significant.
3) Unit quality clearly affects its ability to be spotted.
4) Snipers do not spot better than other binoc units, either when they are stationary and spotting moving units or when they are moving and spotting stationary units.

Still up in the air:
1) How much better are snipers at remaining unseen than other binoc units?
2) What ranges are snipers spotted at, and how drastically is it affected by unit quality.