Which do you prefer?
I like the 3-point lockdowns - they seem closer, on average, than the 5-point maps. I'm willing to bit a fair amount of that is partially psychological, as being 5-capped can be a lot more demoralizing than being 3 capped (for a small amount of time. Afeter several minutes of either, ya tend to get quitters).
They have different dynamics. A 5 control point lockdown is more about capturing points and outmaneuvering your opponent whereas a 3 control point lockdown is more about defending what you have. Also, I think a 5 point lockdown requires you to change your strategy more than a 3 point lockdown because control points are changing fast, so you can't be too focused on doing one thing.
I like them both. 5 point lockdown is more active, but 3 point lockdown leads to more battles.