>But why HTML at
all? What can HTML do that SVG can't already do or won't very soon be able to
do?
scrolling divisions with as much text in them as you
want, layout determined by how much content you have in a particular area(this
is different from layout determined by percentage). A text element with a bunch
of tspan child elements does not seem to me to provide a
good way of presenting document information, and is at any rate not particularly
suitable to transformation from many document formats which do not care how
much space the text takes up.
In short better, if
better is taken to mean less worrisome, text layout.