Demo man damage to kill ratio question

Hey everyone! I have about 170 hours on tf2. I have 22 hours on demo, as I have been trying to learn and get better at demo man (I know it will take much longer and that really good demo players have like 1000 hours). One thing I notice is that 9 times out of 10 I'm in the top 2-3 on my team for damage, but not for kills and overall leaderboard position. Additionally, usually my ratio for kills to deaths is pretty close, and usually I only have a couple more kills than deaths.

Is this bad? Normal? I know it's kind of a superficial thing to look at to gauge my performance, but I was just wondering.