I've yet to see a VCR that allowed you to skip ahead/back 30 seconds quickly, instantly jump to multiple show recordings, save things digitally (excluding specialized higher end equipment), etc. While their base functions may be similar, thats really about where the comparisons between a VCR and DVR end.
Selective quoting and taking things out of context.
And the 30 second skip will be gone if TIVO had anything to do with it.