Their sensitivity/ “hotness” is so mental and interesting. My hano WB mare will once in a while spook at something, has even bolted a couple times, and she’ll be in sheer terror while it’s happening, but then seconds later it’s done. Off her mind. Chill as ever afterwards.
The odd time my lusi has been gotten really spooked (only when we’re on trails alone), he STAYS upset, for a good long while. He doesn’t bolt, it feels like he’s going to, but he instead basically is piaffing/ hopping/ jumping/ dancing like he’s on fire/ snorting, etc., full meltdown, and going “omgomgomgomogmOMG!!!OMGomgOMGO.M.G.omggg!!!” in his little head for a longggg time until he decides we’re safe again (around other horses). So, so different - I can really feel the difference in their history of breeding.