I tested the Maximum Performance Counters Per Session parameter in my lab. I used a script that was developed to gather every instance of every counter and return their values. Here is what I see:
cat output_8X.txt | grep 'CStatus' | wc -l
4197
cat output_9X.txt | grep 'CStatus' | wc -l
4577
cat output_10X.txt | grep 'CStatus' | wc -l
15623
It seems that this parameter is a soft limitation, but I am still unsure. Any ideas?