Gimme a fucking break. Novembre's material on Novembrine Waltz is far more intricately written and put together than nearly anything Opeth's ever done. I like the bands about equally, but there's no denying their stuff on that album at least is far more composed and polished than Opeth, who suffer from the "riff pastiche" feeling quite often (which makes sense, cause some of their albums literally WERE ex deliverance being a bunch of riffs spliced together in protools). "Everasia" especially is far, far more complexly layered and actually has contrasting parts interacting in ways that Opeth never has bothered doing. If you're such an amazing composer I'd like to see you make a song ripping off Novembrine Waltz. It just isn't very easy, at all, while it isn't particularly difficult to make a cheap Opeth ripoff.