I think the hammer throw is a bit much for most, if not all, from the factory. I don't like the gun "jiggling" from the force of the hammer dropping. hold one loosely and dry fire it, it's weird. the gp-100 and super redhawks do it too, but not to that degree (and even less if fired d/a).
as for older ones being stronger, that's just the vaqueros to my knowledge, the originals were rounded/contoured blackhawks, the newer ones are smaller/thinner aka WEAKER in critical areas. in 45 colt, the issue has been weak cylinder exterior walls, not the frame. a hot 45 colt is usually not even that much psi, usually not over 30,000. that is not going to blow a frame on a steel gun- a paper-thin cylinder yes.