Does size matter in art?
To take this question down to its most basic form: If you take away the properties of size and color in the context of sculpture ... you're left with nothing ;-)
The size of an object obviously has a fundamental influence on how it interacts with the physical world around it, and it is that interaction that defines the nature of its existence. An elephant and flea have a very different relationship with the Universe. In the context of my series of nano sculptures, it is *partly* their scale which turned them into such a viral phenomenon. Their size went beyond the physical (as did the works of IBM) to encourage viewers around the world to ask a wide spectrum of questions ranging from "how has humanity come so far?" to "does size matter in art?". Would they have been as impactful at any other scale? So to answer your broad question...Yes, size is a crucial part of the message in any work of visual art. As an analogy, you may ask "is harmony important in music?"
On a side matter:
I very much appreciate your clear way of asking "does size matter in art?". Were you making a clear distinction from the question "Does size matter in sex"? I'm interested in why you didn't simply ask "Does size matter?"
Your second question:
"Does your art bring anything to the table"? I think this is a matter for each table owner to decide, it entirely depends on whose table you are referring to. On the table of my life, it brings a huge amount.