Burakovski's only 24 but hasn't cracked 40 points so far and is trending down.
Johansson is 28 and hasn't been anything impressive since joining the Devils. He was 26 and coming off a 24 goal, 58 point season, having had three 45 point seasons previously when NJ traded for him. They could have thought he'd just taken that step, becoming a 60 point forward, or maybe that he was taking the next step to becoming more than that. Meanwhile Washington was selling high on him, as they may be doing now on Johansson.
As others have mentioned, NJ gave up mid/high picks to acquire Johansson so it's likely they'll be looking to salvage value on him, dumping him off as a rental on a less value-savy GM...
Either works as a replacement for Baertschi giving us another satisfactory 2nd line winger. Problem is what Benning has shown he gives up for marginal players. A 2nd for Gralund. A 2nd for Baertschi, before he developed into what he is now. Basically 2 first round picks for Gudbranson.
If Benning gives Pouliot or Gudbranson or any forward not on an ELC besides Bo Virtanen or Leivo then it's a win in my books. I only hope picks aren't thrown around.