SanDroid (11/18/2010)
If you look at some of these posts several people asked the author to respond to the fact that they where not able to replicate what he described.
I can't replicate showing that it actually uses more space, but not having a real definition for "defined row size" doesn't help. (Along with my lack of knowledge of internal storage.)
But the BOL link appears to support the question with these quotes: "In some cases, the metadata overhead might be larger than the old storage format." and "bit: The metadata overhead brings this to 4 bits."