Loail-- No, it's not Risk! You can't even compare some games. Every game has it's differences.
And it's not all reflexes. Like, if you take some time to get to a defencive point, and an enemy walks in facing away from you(which will always happen, because of the two points), "reflexes" aren't going to save him. However, if he thinks about where the other enemy could be, he might make the decision to come in there spraying. But then, say that there's another point behind him if he comes in like that. The person could be at either point. So, you could get TWO PEOPLE(in a team to cover each point. If the person isn't in one of the points, the guarder of that point will attack the other, hoping 2v1 is enough to take him down. It probably will be, unless it's autococker+barrel vs Crappy gun W/O barrel.
Unfortunatly, not many maps are anywere near that.