If you go by actual trades made in previous drafts, not hypothetical charts, we actually got the better end of the deal by a little bit. Pick 34 is worth 800 points, and picks 47 (540 points) and 78 (230 points) are worth a combined 770 points.
http://adamjt13.blogspot.com/2012/04/trade-fitted-draft-value-chart.html
There are many examples in recent years showing that moving up 13 spots in that part of the draft costs at least what we gave up. In 2007, for example, the Bills traded up from 43 (four spots higher than us) to 34 (same pick we got) and gave up the 74th pick (also four spots higher) to do it. They paid more to move up less for the same pick. And there are many examples of a fourth rounder, such as our 119th pick, being enough to move up only about half as far as we did.
http://adamjt13.blogspot.com/2012/04/history-of-trading-up-in-nfl-draft.html
The only way we could have gotten the 34th pick for our second- and fourth-round picks -- or gotten a pick back from Washington -- was if the Commanders had been willing to accept less than what many other teams have gotten in recent years.