Spindoc- not to be argumentative but, I have seen a couple hundred rpm difference with 2 props from the same manufacture same day same engine same time.
There are many variables-temp, humidity, elevation, tuning, etc. when trying to compare RPM numbers.
I have not run my BME 110 on a 28x10 yet, but I feel I can match the 3W 106. Oh and by the way I am waaaay lighter too.