It's no news that other architectures can run the RT software, and the Titan V has most of the important hardware used in the RT pipeline already(Tensor cores are critical, as are the improved mixed precision instructions amongst many other things), the famous Star Wars demo demonstrated that Pascal cards and Volta can certainly run the calculations required, just around x4 slower minimum for Volta, with the lack of Tensor cores cutting Pascal's performance down to almost half Volta's.
If it really is possible to hit 100fps on a Titan V now then it demonstrates the monumental improvements that have been made to the RT pipeline since developers were finally able to get their hands on it and apply it practically to anything beyond small test environments. It's worth remembering, in terms of pure compute performance the Titan V is a notably larger, more expensive & more powerful chip than any of Turing's offerings (Since it was never intended for consumers), and is the card initial RTX offerings were technically originally made on(The only real developer card pre 2000 series).
the titan V has no RTX cores. so it seems it reaches that performance just with ALUs.
Titan V has Tensor cores(Used for de-noising the ray traced image significantly faster), and many specialised units/instructions that went into Turing's shader.
EDIT---
They are just renamed Tensor cores dude. You know? ones that would be pretty much useless otherwise to some one who plays games.
Nahhhh, Tensor cores are useful for the RT pipeline but only perform denoising calculation on the post-RayTraced image and offer around a x1.5 speed up per CUDA tops(It essentially allows you to make a messier less complete RT image quick and dirty, and then clean it up rapidly after), the RT cores still offer around an x4 speed up in relevant calculations and don't perform anything remotely comparable to the same type of calculation. Essentially, Volta is far closer to Turing under the hood than Pascal was, even if most software doesn't demonstrate that, but the 1 RT core per SM added to Turing SM's is undeniably a performance impacting architecture change too when relevant.