Just checked out Arch Enemy's last album, Alyssa pulls it in well, she doesn't seem to be as raw as Angela Gossow? I always got the impression with Angela that vocally she was at her absolute limit, almost pushing past it at times. Alyssa seems less totured to do a similar job. Different artists, quite like both in how they perform and I don't think AE suffers with the change, it seems a tad more polished vocally with Alyssa to me. No bad reflection on Angela, she did a great job, that just the way I hear it I guess.