Took me a while to do that too... (about
three hours it seems!)
I haven't played much C&C:A, though I think it's a very good game. The primary difference between it and BattleLore/Memoir '44 is the presence of leaders.
Leaders allow you to activate them and a "line" of units adjacent to them. This feature isn't there in BattleLore or M44, so it can be a lot more forgiving (if you have control over the battlefield) of drawing "bad" cards. You can still draw cards that don't allow you to activate leaders, though.
You can say that C&C:A is about leaders and keeping your units in lines.
Memoir '44 is all about the terrain. Units need to get into good places where they can take advantage of its defensive features. There are no lines - units don't need to be next to each other.
BattleLore is about keeping units in formations whilst avoiding the terrain. BL terrain tends to hurt units slightly more than it helps them. Well, not entirely, but heavy units don't like terrain much!
Meanwhile, BattleLore has resource management in the form of Lore. I'm not 100% convinced by Lore. There are some cards that may have too great an effect. I'm very, very fond of the "Medieval Lore" rules in the 100 Years War and Scottish Wars expansions, which restrict the Lore rules to more of a grace note than a key part of the game.
Cheers!
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