Why didn't I notice this before?

Sitting here listening to Exodus' 'bonded By Blood', and the song "Metal Command" starts. Suddenly I'm hearing what must have influenced Roger Martinez (Vengeance Rising) style of "singing"! It's weird, becasue it's not so apparent in the other songs on the album. But in "Metal Command" Paul and Roger sounds like dead ringers!

I never noticed it either..... but it makes sense