I think is the M1/Bradley and thermals thing since most cold war stuff seems to be the USA killing off "Commie Hordes" in the 1980s just before the break-up of the USSR.
In the 80s, the NATO forces have a marked superiority with the new model MBT with thermals, Milan missiles with Thermals, TOW vehicles and helos and even APC with (yawn) ATGM and thermals. And most of this stuff quite happily kills the Soviet kit with frontal shots. Plus MLRS as well, and cluster bomb armed jets with decent ECM too. So relatively little thought is therefore required by the player. Blanket the battlefield in smoke or fight at night and pick off the green dots appearing on the VDU, basically. No need to bother with manoeuvres. So 80s scenarios as NATO are nice and easy for players who perhaps just want to shoot stuff up without too much danger to their own toys?.
If you do scenarios in the 70s with the M60 etc,
then the Soviets have a reasonably fair chance against you, and in the late 70s with the emergence of laminate armours, maybe a slight superiority to 105mm armed MBT which will have to (shock, horror!
) manoeuvre to the sides for reliable kills. No thermals to use to pick them off while they are blind to you, and their Saggers can cause you fits especially on battlefields with decent visibility. Heck, I got a lot of my chieftains slotted by T80B models in one late 70s campaign - as they had TI and I only had IR and
it was night... So the player needs to apply some thought.
Roll back to the 90mm gun M48 era, and the American player
really does have a bit of thinking to do as he does not have the TOW and Dragons - in fact he may have to rely on the 106mm RCL, and the 90mm teams. And some NATO armies in that era may find that it's the Soviets that have the night fighting advantage as well. I find playing USA in the 60s era a fun challenge since you
actually do have to apply tactics with the 90mm tanks, and cannot simply rely on air power as the ZSU-23-4 and grail appear on the scene.
Myself - I tend to limit myself to the early 70s and before in long campaigns (I tend not to play scenarios as they are a play once and never load it again thing. I don't fit the reload a scenario and try to do it better this time school - once played I know what is where etc, so it is no longer interesting. Battle generator for a quick once-off or the LC for something longer term). Currently fighting a 1960 10 battle British v Warpact game. T54 here
will pick off centurions on occasion at long range with their 100mm HEAT. 20pdr centurions are seriously outclassed frontally at 1000m+ until they do run out of HEAT.
So - probably 80s as nice and easy to play and win, and USA as most scenario designers are from the left side of the pond and are designing for the majority of players, who are also from there too?.
cheers
Andy