This must be why you love IB so much. This is very much how I feel about IB, while I adore Death Proof.
Woah, back it up a bit.
Inglourious Basterds has no wasted dialog. It's all there to serve a purpose and push the story, even when the dialog is only there to draw out tension like the bar scene.
Plus it actually
has a plot, unlike Death Proof.
But, the biggest beef I have with Death Proof, is that I don't think it's true to the concept of Grindhouse cinema. He may have set out with that as his intention, but he got lost in his love of his own dialog. At no point, other than the grainy look, does that film really feel like it's actually emulating the style of old grindhouse films. The dialog is far too witty and long winded. Some of the production values are far too good (Planet Terror had this problem as well, if they actually wanted to make a grindhouse film they should have stayed away from CGI, IMO). Also, about half way through the film it becomes obvious that Tarantino stopped trying to make a grindhouse style film because the awkward edits and audio blemishes and even the grain start to go away and then disappear completely.
The difference is that IB never falters from what it intends to be. It sets out to tell a story, one about film saving the world from the ultimate evil (great fun for us geeks, right?!), and it does it. Death Proof just never really works. It's clunky and messy. It's also a shame that such a great car chase is stuck on the end of sloppy mess.