This trade looks much better than the other one IMO. Two young, fast DB's with excellent M2M cover skills whose overall ratings are on the rise.
I haven't looked at the rosters involved, but perhaps Oklahoma wanted to upgrade their secondary and felt he wouldn't be able to in this draft? Oklahoma gets 2 players at a position he wants whose values are rising vs the volatility crapshoot the draft can be.
If this trade ends up getting reviewed, you already have my opinion unless someone shows why this is bad.