I believe that Starcraft and Q3a E+ mechanics cannot be compared. Since each game is a different genre and requires different strategies/ tactics for winning the game.
In Starcraft the so called APM allows a player to be physically prepared to a fast action/reaction. The keys spam is just that. A player would spam the keys even if there is nothing to do. Just for him to be ready when the next self-given-task would require such fast action/reaction.
In Sports in general one needs to pay attention and have the muscles warmed, swinging the body weight on each leg, the arched position (see the soccer goalkeeper position, volleyball back liners position, rugby front liners position etc)
In Quake 3 / E+ i believe we don't have such tactics. One mostly stand in full attention and is not required to be physically prepared for a fast action/reaction. The amount of self-given-tasks are a lot to be physically prepared. We don't need to spam a key to have that. But also the rhythm cannot be maintained constant. Spamming movement keys does not provide so big advantages alike Starcraft for example. A good aim is a trained eye and mouse movement coordination. Most strategies and tactics in e+ require you to have a trained mind, good aim (mouse movement) In E+ the clicks rate and key press is does not involve/require holding a constant rhythm nor give advantages to one who does not. But between other Quake 3 mods i believe E+ is the most intensive and fast pacing game. And in excellence i speak not about plusN config but e5r/e5 config scene. PlusN allows a bit less mental and physical requirements, also in my top too.
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epsislow

wrote:

hold horse in one hand man
second hand have mouse

lol