Oh course you are right Mapman, and I am referring to audiophile pressings as well as the Mercury and RCA's of old. There are many great recordings from that golden age. The decline was "dynagroove" and the like in the early to mid 60's. Many of the recordings are limited for the reasons you state. It is too bad that the technology of the playback of the time wasn't in step with the engineering and quality of pressings, especially in the 50's when the LP was in its infancy. When recordings and console stereos became the norm in households there was that need for a standard and the recordings suffered.
In reality there is no theoretical limit to the dynamic potential of vinyl playback. I agree with you that on certain music and for sound effects digital can do things vinyl can't. The important thing so far as dynamics in my comparing the two is the gradations between say from pianissimo to a rising cresendo or in the other direction and lending a believability that what you are hearing is almost real. Too much dynamic emphasis is an exaggeration and typically a product of a system imbalance but it is also an effect that some want to hear. Telarc really exploited this with their early recordings. I have a few. I certainly never heard anything like these recordings in a concert hall. It is the micro dynamics and the shifts. Digital in general never did this convincingly to my ears but a few times in other systems but I am now hearing this effect with the Havana all the while maintaining the tonality and natural decay in the soundfield, that continuousness. The Havana presents these dynamics gradations extremely convincingly although I'm sure some would want to hear more "detail", the music is all there to my ears. That final gap between real and playback is the real space and air that will probably never be realized, we just get a bit closer. My real excitement about this whole experience is that really decent digital playback has seemingly arrived at a reasonable price point.
I still have some great vinyl piano recordings that I doubt will be equaled by any of my digital recordings but this still remains to be seen. The Havana is DEFINITELY going through a breakin. This is generally apparent in most but not all electronics in my experience but in this particular piece I am hearing an IMPROVEMENT, not change, in weight and body which adds a greater sense of realism when there are large dynamic shifts in the music. I suspect this is much of what I am hearing and it is impressive but still subjective in this discussion.