There is something more... but not for you.
The only AIW card made with a firewire port was the AIW 8500DV (I own one).
Which has long been made obsolete by newer models.
AFAIK, the AIW will have no effect on video coming in thru a firewire connection. The things
you mention from the promotional blurbs come into play when you are actually capturing
video thru the card itself (thru coax, RCA or S-Video connections). They are supposed to
help clean up the incoming video signal, or add effects that make it easier (or flashier) to
save your video in digital format.
Video coming in over firewire (assuming its DV) is already in a digital format.
The AIW does come with some utilities to help you edit and convert your video to DVD or
other formats. But I don't think buying it for the apps is your ultimate goal. I still like
my AIW, and am planning on buying an AIW 9800 Pro for my newest system, but I
can't recommend it to you, based on what I am thinking you really want.
As fsstrike said, (If your motherboard doesn't already have it), get a cheap firewire card,
and spend the rest of the money on a DVD burner.