pvr wise - it can talk and be a frontend to mythtv, so that's not a problem. its easy to launch a web browser of your choice from within xbmc. the gui is pretty decent I think, no problem using it from a remote. you can reskin also if you prefer a different layout.
as for setup. you can get live cds with it on ready to go.
we are not going to agree on this...
your final comparison to be honest, reads from someone who has not actually really used xbmc recently.