I haven't made games for a long time so I can't speak for my experience, only my friends. From what I understand (1) Perforce has decent integrations with the game engine editors my friends work with, so editor support is no factor for them and (2) it has better delta support for the file types they work with - I believe Git LFS mostly uses a generic xdelta diff which is kind of mediocre at everything versus Perforce can understand different file types and be extended to support custom types.