Some comments from the scenario designer (me):
Some scenarios were made less difficult (victory turn limit increased by 1 turn mostly) because of the weather engine giving unseasonal results from time to time. After a discussion with the rest of the team, it was decided that the scenarios should be a bit less difficult if the weather can seriously ruin a scenario, because we don't want people investing their time a scenario they can't possibly win due to no fault of their own because the weather goes to mud on the final objective hex. This was particularly bad for a scenario like Crossing the Dnieper, where during one test I got mud on the final objective hex 4 out of 5 tries which made it impossible to win a BV. That's also why the difficulty of Dnepr/Donbas was downscaled in the original: because in some situations it could be just plain impossible to win a BV.
The scenarios might also feel like they're easier because, in reality, the Soviet superiority in quantity of units and equipment by 1944-1945 was more significant in relative terms than the German advantage in quality was in 1942. As the Germans in 1942, you still needed to pound through a fairly substantial Soviet force in many scenarios. In many Red Turn scenarios the Germans have their historical amount of reserves: none to possibly a small one if they're lucky.
Also note that the difficulty refers to getting the best possibly victory (capturing all objectives on time), not simply winning the scenario. We also try to make the game interesting for a wide audience (and no, not just because of sales, also out of passion as we try to make a good product that can be enjoyed by both grognards and casual (war)gamers), as there was an enormous variation in how quickly people finished scenarios in the original. In general, the BV is at the turn where I can complete the scenario without serious influence from the weather (which can have a helping or handicapping influence).
Due to the lack of German reserves, it was difficult for me to get the difficulty where I wanted it to be. As Iain mentioned, if you know the system the DLC won't be all that difficult compared to how difficult the original was when you just started playing it. For people who are new to the game, I expect that numerous scenarios will be challenging, although as implied earlier the overall difficulty of the campaign isn't that high, around medium in my opinion.
< Message edited by ComradeP -- 3/4/2013 12:05:50 PM >
WitE Alpha tester
Panzer Corps Beta tester
Unity of Command scenario designer