Not quite the same. Even the ST60 and ST60B are not the same. Check out the numbers here:
The GT60B has the same panel as the VT65B, NeoPlasma Black 3000 with a 3000 FFD.
The ST60B and GT60B has the same Infinite Black Pro filter and same High Contrast Filter.
All 3 sets have different totals for gradients.
Yet, if you look at the ST60B, it has less options than the ST60. 1080p Direct, 1 pair of glasses vs 2, and so on, although I think this is a firmware thing and not actually because of any hardware.
Now, what I really wonder is, just how different are the panels really? Is the gradients set by the panel, or is it set by the A board? Is the FFD set by the A board, or the panel? And so on.