You do notice that the game is about one of those wars in which soldiers were - in the part of it depicted in the game, anyways - in a pretty damned miserable state, under rather horrible conditions all the way, no matter which side they fought for?
The game would model weather and sanitary conditions as well as the supply situation fairly well simply by making the soldiers handle like malnourished, exhausted, sick, shell-shocked wrecks. Not bloody robots.
The irony of this comment is that RO1 covered a much more variable set of conditions, yet the argument of returning to RO1 soldier performance is supposed to model the weather, etc. of the Battle of Stalingrad alone.
This in itself proves that the performance of the soldiers in either game has nothing, zero, to do with conditional variables like the weather or nutrition or anything else. We can have fun
imagining that they might, but they don't. If it did, they would be variables that a
mapper had control over.
What I find interesting about the leveling system regardless of conditional variables is that the abilities that get leveled in HOS are things that the game mechanics afford us as players no skilled control over, yet which real soldiers could be better or worse at, and even improve with experience, like reload times. Quite probably, there'd be significantly more than a 30% gap between the best and the worst. But, no matter how good you got at RO1, you always had the same exact reload time as the other guy, whether he is reloading his first clip or his 1,000th. To me, suspending for a moment the idea that you are
not playing the same exact soldier you were last round (I'm able to suspend this because the same problem exists with actual progress in
player skill, so it's not a valid counterpoint), it only makes sense that there is an ability to get better at reloading your weapon, and that this is tied to player "experience" or accomplishments on the battlefield. Perfect? Of course not. But do I like it? Yea, I do. I like having to fight people that are better, faster than me as much as I like getting to fight people that are worse, slower than me. I like that challenge.