What is the mathematical rake advantage of 15/30 vs. 5/10

[Lansing]

I noticed in another post someone was saying something to the effect that the rake at 5/10 v.s the rake at 15/30 was worth as much as 1 BB/100 to the 15/30 players. Is this true?

I am looking at the Party rake structure right now, and it certainly does appear that you'd be paying much less rake per bet at the higher limits. That is, of course, intuitive. But just how much of a difference would it make?

Any advice appreciated.