Interesting... I think it's way heavier than Forged By Fire, for example. And Allegiance. They were intending it to be their heaviest yet, and I think they achieved that.
For me I don't think Allegiance covered enough ground. Everything on it was very 'Firewind', so the reason I mostly think The Premonition is a little better is because they tried, and pulled off, some new ideas which I felt were missing from Allegiance.