I'm just passing what i've been told in one local shop that services several local rallyist (and rallycross) cars. Of course i was interested to chat about the goodies like ohlins rally dampers or APR radical brakes and other car porn that i saw on those installed
.
Otherwise, if anything, rally dampers should be of much stronger construction. Heck, one can see it even in your pics vs R&T ones, much thicker bodies, attachment points of heavy welded plates with extra ribs and such. If Leo told that they will last for you, then i guess indeed that those short servicing intervals that surprised me, attributes to real hardcore competition rallying, and they should last well if not abused to THAT extent. Then again, rally race tires also are worth only for one race too.
Such driving & wear differs slightly from "normal"