Well, the 2D is in a higher resolution than the 3D. Interesting way of going about things, but it would have been interesting to see how SNK further wrangled more out of the hardware over the years.
And I still say the original SS64 has the slickest presentation of any fighting game ever made (with the portraits during kills, DMs, Fatal Flash and sword clashes and all that). As much as I prefer SS64WR, I do wish it had retained that.
Oh, and EG, maybe they mean the way the background goes all pixellated during hits in Warriors Rage.