I quoted only the data related to the SX (the comparison was the occasion to measure the SX), that is of main interest.
I have the magazine no more, but I recall also the RS emerged pretty good.
Two good bikes, but overall, the SX by the magazine was considered a very good package and in favour due to the taste of the reviewer.
More ergonomic than the RS, more compact, more sporty.
As obvious (200cc difference, and two versus inlinefour), RS more torquey, SX more revvy, each one its taste.
RS seems to brake in little less space (dunno the details) on street, but overall braking system of the SX was considered pretty good with no degradation in performance also during track use.