What's more important to the Bengals.....

[Millhouse]

It depends how good the o-line already is. The last couple of years it has been pretty bad overall, so it needed to be invested in. A team with a bad o-line will rarely go far in a season.

For sake of argument let's assume the o-line is a solid average kind of line. Nothing great, but good enough for the QB to not get killed often while not hindering the run game.

In that case one can say that having a dominate d-line could be more valuable when the playoffs roll around, as we have seen in the past with teams like the Giants or the Broncos. I dont know if having a superb o-line with an average d-line would be better to be honest.