Thats a much better answer then I gave Burkhard! I agree 100%Burkhard said:That´s the trouble with musical subgenres: As there aren´t any proper definitions laid down anywhere, it is very likely that you usually will get at least two different opinions on what kind of music (insert band name here) plays! And I guess even if there were proper definitions laid down somewhere, there would still be people disputing them. As regards Blind Guardian and Helloween, one could e.g. as well ask "Why are they considered power metal bands?" At least their first two or three albums used to be referred to as (melodic) speed metal. However you like to name it, I think the only question that really matters is whether you like the music or not! And I´m afraid there´s only one method to find out: Listen and decide for yourself!
Perhaps I am a bit morose today [pun intented]