to me the game was probably easy and the final boss could have been the weakest final boss i faced. Well Ganon from the original would have to be the easiest
it annoyed me and I died once. My sword wouldn't charge for a skyward strike. Most of the final bosses are easy though, compared to games like OOT and WW, demise was challenging.
I just finished it in Hero Mode and charged straight through everything. It wasn't as hard as I thought. I finished with seven hearts left and all of my potions. I only used one fairy. Still, finishing it in one go increased the Epic factor ten-fold.