Lancer Tactical is a rebranding company like Cybergun, UTG, TSD, etc.
So far they've only rebranded AGM (a.k.a. Quality Power). AGM has always been a mediocre brand at best, their M4's are decent, but only because they're TM compatible and parts can be replaced. The MP44 is a AGM exclusive design so if something breaks it will be harder to find parts.
Hope that helps.