Never had a Ti bolt fail, and have been used from dh bikes to xc, slalom, bmx.. etc etc
But i don't buy them for the weight.. more because they are often much better machined.
Most steel ones i just don't find to be quiet the same quality. Nothing wrong with them at all.. just a personal...
We stopped of at Tumut last time on our way to Thredbo.. Not a bad little xc trail network, and somewhere not usually visited by most. Some pretty fun flowey trail!
Not sure if they are really the equivalent of each other with the sizes you've quoted..
The HansDampf & RockRazor run big for size, the RockRazor does have similar small knobs in the centre but thats the only thing in common with the Larson which is purely a XC tyre, while the RocRazor has...