RTS games test a player's ability to make effective decisions quickly, something that takes practice by the way, and is the hallmark of any good strategist.
You know, words have meanings.
Let's look at the Wiki which shall explain it much better than me as a non-native English speaker:
"Strategy, a word of military origin, refers to a plan of action designed to achieve a particular goal. In military usage strategy is distinct from tactics, which are concerned with the conduct of an engagement, while strategy is concerned with how different engagements are linked. How a battle is fought is a matter of tactics: the terms and conditions that it is fought on and whether it should be fought at all is a matter of strategy, which is part of the four levels of warfare: political goals or grand strategy, strategy, operations, and tactics."
- Hitler deciding to prepare then launch the Battle of the Bulge, with how many men and tanks and when, THAT would be strategy. And it didn't take 5 seconds to prepare. Strategy is about collecting data (intelligence), having them analyzed and synthesized, and only then asking experts to show you the different options so you eventually can make the final decision. It has nothing to do with quickness; strategy has to do with OPTIONS and how you weigh them to choose the one you want. And, yes, it takes time.
- Same thing with General Petraeus deciding the strategy in Irak. It had nothing to do with "Do I send 2 Apaches to patrol around Ramadi tonight?" but much more with "How many men do I need to ask the President to send me to secure those 10 cities?" or "Do we try to rally the Sunni militia or the Shi'a groups?". You can bet he had to eat thousands of pages of reports before he had any idea of what his decisions would come to be.
For a commander in the field, in battle, it's of course quicker but do you know how much time it takes to move a company? Not to talk about batalions or divisions. Strategy is not clicking like a monkey to move 5 peasants to attack 1 troll. First, that would be tactics (and that is the reason why we talk about TACTICAL battles here instead of strategic battles like in GalCiv). Second, even in tactics things must be thought. War is not a video game, the only immediate decisions would be at personal or group level, not higher.