I would say that it can. Especially if the theme is fight to the death.

Actually no. I think this is suppose to be a trick question. At first glance, it looks simple and easy, but when you really analyze it, then it becomes clear that the answer is no. Because, look at this way: it's very easy to just throw a punch here and there until you feel the adrenaline pump, but once you get to that point, do you even think of stopping? No, because it's too hard to stop, when you're already so far in. So that's the reason behind my answer, call me crazy, but the hardest quality for ANYBODY to manifest is self control aka, knowing when to STOP.

Exactly what Addika4045 said. Acting like a raging bull does not make you a better fighter nor does it make you more powerful.

It really depends on the type, but when it comes to it, if you are merciful, you cant do enough damage.

To argue Addika, the ability to be merciful and being merciful are two different things. You can be merciless but still have the ability to be merciful.

If you can maintain the self control and still keep the mercilessness, then thats what I say is the best.

Mercy is weak... unless you're God coz then nobody has the power to take advantage of you. But it is weak in humans.