Tactics and Skill Options

[dgyor]

Do tactics have any effect on the outcome of the game? or is it luck? I have found no difference in the winning or losing playing competitors of roughly the same skill with the same tactics. eg. I play a specific tactic three times different from my opponents who all play the same (normal) as each other, and results are a draw, win and a loss. The losses and wins are by considerable margins though, not close at all. If the results were close it would be a different story.

And what is the max skill? 200?
I'm trying to work out age:skill ratio