I was deciding whether to answer you
It has been 2hrs, with no answers…
Take this for what it is
You asked about the RSP and Ikea Rothult lock
I have tested a MFGC V2.1 (similar size as the RSP) on a Rothult Chinese knock off
Yes it was a significant improvement and would read an xSeries.
Obviously not a direct comparison, but hopefully gives you an idea until somebody can answer your ACTUAL question