Greb is already more talented than Laughton is offensively... not sure it translates, but however bad you think Greb was offensively, he already was more skilled than Laughton.
Right now Laughton's game isn't translating to the NHL either, so not sure who would have been a better fit this year, but I think Greb likely is an NHLer at some point, even in a limited role, but that looks like what we traded for anyway.
Greb's most common linemates were Reaves and Dewar, he's shown flashes and is young, I don't like that we gave him up.