Im currently grinding $10NL on FT. The rake on$10NL pots there is 10% whereas elsewhere, or at FT above $10NL its only 5%. Ive still got another $110 bonus to earn which is why Im playing there.

My question is, is this 10% rake altering my ptbb/100?

My sample size is quite small (11k hands) so my winrate is still up and down but it averages 4ptbb/100. Ive won $80 clear and paid $186 in rake along the way. But, if I was only paying 5% instead of 10% (lets say $106instead of $186) that would take my winnings up to $160. This implies that my actual winrate is in fact 8ptbb/100.

Is this right or am I missing something?