Honestly, the defensive line won't be as bad as he's making it out to be. The offensive line is going to be really good and frankly, they should be winning against the defensive line.
The strength of the defensive line is going to be in the waves of guys Marinelli throws at the offense. They're not going to send a couple of super stars after the QB... they're going to send fresh, aggressive, capable guys after the passer and regardless of what this article says (I have a lot of respect for Vela), the DL is going to be better than last year's version.
He can remember back to 2005 Ware and Ratliff all he wants, but 2013 Ware just wasn't very good and 2013 Ratliff was MIA. Last year's DL really consisted of Wynn's, Nevis', and Brown's more than Ware's, Ratliff's, and Hatcher's. The dropoff from Ware (even last year's decrepit version) to Wynn, and Brown was precipitous. There were a ton of plays where Wynn, Nevis, etc. were what Dallas had to put pressure on the opposing QB. That just isn't good... even with an old, broken down Ware on the sideline.
This year's version with Mincey, Melton, Bishop, Coleman, etc. may not be the '85 Bears DL... but it is definitely better than what they rolled out there last season. The depth, IMO, is the key. There isn't going to be plays where the OL can take it easy because there isn't a decent guy in front on that snap.
Not to mention that it will be year two running a 43, which as everyone will tell you, typically results in a very big jump. Plus, Marinelli having control over the whole defense should improve it as well.
There are a lot of reasons why we should see an improvement along the DL in 2014. There are also reasons why it might not be great either, and I understand that... but none of them have anything to do with how good Ware and Ratliff were in 2005.