the benefit he gets in each round is piling up .. I have seen it but no is an immense damage .. as it shows because remember that if you have 30 k ninjutsu and you increase a 100% or 150% the damage no is double. But rather 10% of the ninjutsu you consume .. it will be the one you use as damage .. example if you get 100% out of 30000 = (3000) .. not 30k or 45000 which is 150% it would be more like 4500 .. remembering that sasuke p for every 10 chakr increases his ninjutsu by 15%. if you put critical to brute to sasuke you will break everyone