I dunno. But Dan lilker has a lot of writing credits in STD and ATL, so he was indeed a very active member in the band. Nevermind, I love Frank's bass, maybe he hasn't Dan's writing skills but he is better player, no doubt about it.
Not to mention that if Dan Lilker had stayed with anthrax there woudn't be no Nuclear Assault. And no Brutal Truth. And both bands kicks some serious asses.