Ok it took me half an hour to beat the final boss in Attack mode and I am so happy because I did from my first try and I used a ton of items ... at some point I tought he doesn't die anymore.
Considering this is my first time playing the game and I didn't know anything about the ending / strategies / skills etc I did pretty well for Attack mode - my opinion :D
My only question is : no matter what leader you choose I assume the ending is the same right ? Or it is different ?