The biggest issue is we didn't have a true NT in those days, if we could have had a Ted Washington instead of Jeff Wright the defense would have been worlds better. That said Jim Kelly also played horrible in all 4 Super Bowls too.
IF we learned anything from the 90s teams the no huddle offense wasn't a good thing for our defense all things considered. We need to find a running game to keep the clock running on offense and thus keep our defense off the field and fresh.