Michael,
I have been fortunate to play both courses this year. Both have greens that are challenging, but I think that they are very different.
Calusa's greens are very fast and your description of a tabletop is apt. The highest point of Calusa's green complexes is some point off of the green itself and is typically located in the rough. The greens have a raised collar and elevated ridge or ring around the putting surface. There is plenty of depth from the fairway on the greens. Many of the greens cant toward the front or have a significant part of the green surface that does. For these reasons among others, I think Calusa's greens are more receptive to approach shots and hold balls better. The course also has plenty of greens with false fronts and edges. Those false sides/edges are like sluces and are created by gaps between mounding on the edge of the green. Otherwise, the putting surface stops before the severe slopes at the side of the mound. Calusa's greens are built significantly higher than those at # 2.
Pinehurst's putting surfaces are carried out further than Calusa's. The greens are extended to where the green complexes drop off precipitously. On those greens built on flat land, the highest point of the green complex is located at some point within the interior of the green. The high point of those greens located on uneven terrain is at the point where the green and collar meet. I haven't completely wrapped my head around what the location of the highest point on the green means. I suspect that the extension of the edge of the putting surface over the side of the mound and the location of the high point makes it more difficult to keep the ball on the green. I'm still thinking about that. Also, the deepest point of #2's greens is not front to back as frequently as it at Calusa. Finally, the collar had not fully grown in when I played last month, so the green was actually higher than the collar by 1/8"-1/4".
Calusa's greens were easier to hold than #2's greens. #2 offered more options for recovery on those shots that missed the green. Calusa's greens were in better condition and much faster. Essentially, they are nothing alike.
Hope this helps.