I don't believe that suggesting you might have made a different selection with the gift of hindsight is tantamount to declaring Murphy a mistake. There were 240 players selected after Byron; chances were always very slim that he would end up being the very best pick that could have been made in that circumstance. When a smart person is fortunate to get to do something for a second time, they take the new information and data points into consideration to make a more informed decision, rather than blindly making the same choice as before out of ego or whatever.
Regardless, Murphy showed enough promise that I seriously doubt anyone involved is lamenting being "stuck" with him, so to say. Missing out on Verse probably doesn't signal a failure of anything, as I'm guessing there's a good chance they liked both, but just liked Murphy better, which is absolutely how they should be making picks.
Where it could be a failure is if they really didn't like Verse as a prospect for some reason, and then they would need to ask themselves what they were missing with him and hopefully learn from it. Id also consider it a failure if they liked Verse significantly more than Murphy, but just opted for what they felt was the bigger need. That seems unlikely though, as Schneider was just a year removed from using first round picks on Witherspoon and JSN despite the availability of good players at bigger need positions. We're fortunate they did, because those two represent our most foundational player on both sides of the ball.