My brother has one and is a big fan. Can definitely take a lot more heat than a TBAC.
A few design differences I observed besides the obvious material differences:
1) Ultra has an unclipped blast baffle; Ti has all of its baffles clipped.
2) Ultra has a pattern on the blast baffle to induce more turbulence, Ti has standard smooth cones.
The material and design differences should lead to higher volume in the TBAC as opposed to the Ti.
The Ti has a much higher heat capacity and the baffles can handle far higher temperatures. A suppressor turns noise into heat: the Ti can turn more noise into heat without compromising its integrity than the TBAC.
I have not put a scope down the bore of the cans and I’m not an expert, but I really don’t think the Ti and Ultra cans compete with each other, two different tools for different tasks.