The setup was exactly the same, but the original holograms were blue and transparent, while Snoke (while perhaps appearing slightly fuzzy or off) was definitely not transparent or blue - except for the "flickers" which was what confirmed him as a hologram.
For example, here is the Emperor hologram in the OT from the "remastered" version:
That is the exact same style of hologram - transparent enough that you can see through him, blue, and somewhat grainy - done with improved visuals. Snoke is absolutely not in that exact same style - in the picture I posted you can even see that the light doesn't pass through him, he is not blue.
Here, I think, is Snoke during the "flicker"; first you have the solid form, natural colour version:
which briefly flickers to become like the old familiar, blue holograms:
(Unfortunately there aren't many good images online).If Snoke always looked like he did when the hologram flickered then it would be essentially the same style, but he didn't.
Plotwise there is no difference between the setup (reporting big projection of the evil supreme leader / emperor), but to say there is no difference between the style of the hologram (one transparent and blue, one solid and in natural colour) apart from one being in HD seems just to be missing the obvious (or being deliberately obtuse).