No. they look to be the same size and number.
A little Dani history might clear some things up for you and those trying to decide which model to purchase.
The current Fusion provides the most air flow of all the previous models but the smallest bowl size. Keep in mind the OG Dani was designed to give a tight, joint like draw experience, so the air flow was minimum. The six air intake holes were the smallest diameter of all the models as was the stem diameter. Users requested more air flow, especially for water use and BFG responded with the V3 SS and later the V3 Ti model.
FWIW I understand the desire to tinker and customize your personal vape. If you read back in this thread, drilling larger holes provides minimal air flow improvements on the V2, V3 SS Dani's. I can attest to that. The V3 Ti air flow would likely be improved with larger air holes because of the differences in wall thicknesses of the Ti bowl and SS bowl, but can't confirm that.
To improve air flow on the V2, V3 SS Dani models, shaving the bowl diameter down produces the most benefits. This is precisely what BFG did to the V3 Ti bowl improving air flow considerably. The cap adjustable V3 Ti air flow gave the users a better experience for water use at the expense of losing approximately 45% + of bowl mass.
The V3 SS and V3 Ti have the same bowls size. The V3 SS has thicker bowl walls and and hence more heat retaining mass but less air flow due to the extra thickness restricting air flow between the cap and bowl. The V3 SS IMO produces the thickest MTL joint like hits.
They’re all really great vapes and hard to make a wrong decision when buying one. Each model is unique and worth exploring for their subtle and not so subtle differences and resulting vape signatures. Cheers to BFG for their customer centered philosophy.