Ratings aren't an objective measure like how fast someone runs or high someone jumps. So 1200 here isn't the same as 1200 on a different website, and as you noticed even on the same website different categories make a difference.
Tactics ratings here tend to be around 400 points higher than the game ratings.
1200 seems like a very mediocre to below average player. 1600 seems like a strong player. I have no idea where I am.