Both have same music. Guess what it music it is? YouTube - Transformers: Beast Wars - Trailer YouTube - The Art Of War
Woah. Both of these are really epic, I agree. The Beast Wars one really sets it up like a trailer for the series, but the Cybertron one is more like a super epic music video with all the best scenes from the series. They are both good in those regards.
Ah, Battle of Heroes. Say what you will about the prequel trilogy, but the music was awesome! These videos used the song well.