@sobolanu I don't think there's any difference what rating you have. You get high and low rated puzzles at all ratings. Why don't you just look at your puzzle history - it'll tell you the answer.
On my last 7 puzzles - a bit of a let down from how well I was doing until then - I received:
+8 +8 +10 -7 -17 -4 -5 = -5. 3 wins and 4 losses was -5.
I'm not sure what you point actually is, or what you'd like mods/devs to explain/fix. Unless you got a puzzle right and lost points, or got one wrong and gained points (for that puzzle), there's nothing to see here. And you won't get points for getting a puzzle right that you've already got wrong, and you won't lose points for getting one wrong which you previously got right.