Here is a link to the hit from Beca:
https://twitter.com/TamJamieson/status/780722355664457728?lang=en-gb
For me it's a very different hit from Louis' so you have to look at the context
@Russky, there can't be a blanket situation just because it's the same penalty call. I think DOPS got this right to be honest, Beca's required no further action as the opposition player clearly takes a dive (even though there was minor contact) and Louis drove the player into the boards making contact with the head, which for me makes it a worse checking to the head incident than Beca's! I am pleased with the call from DOPS as I wouldn't have been surprised if he'd got a Match Penalty for it?
Here is the hit from Louis for comparison(7mins 15secs):