Why do they always talk about their strategy...?

Because in japanese culture it is unthinkable to pull a secret move on an enemy or attack them when they are unarmed. Samurai always fought one-on-one, and they would sneak into the enemy camp at night, kick the enemy to wake them up, then slice off their head. It is a cultural thing.

Why cant they just give him a normal long sword insted of something that looks like it came from sailor moon T^T

hmmm...strategy is a surprise move anyway. so i think the strategist just want to brag if his strategy works.

Actually, the real reason is to make sure the reader or viewer can understand the thought behind the moves or plan they are about to carry out. It's just a way to make sure the audience doesn't get lost.

Because real men like a challenge, and having your enemy know nothing about your secret ultimate plan of doom, just isn't a challenge. I despise any manga/anime that doesn't have the following ideals, especially Deathnote, Light is a fucking pussy who thinks too much. Rance on the other hand, is so manly, his pure essence would make you bend over.

MANUP.

If I had a kick that could break planets, I would talk shit for hours like anime characters.
It's about being a honest winner. when your winning you have to explain in detail why they suck.

"my spinning, turnaround Kung Fu kick can't be blocked, only avoided. But you can't avoid it because I used secret, awesome ninja binding technique, which has slowed down your movement. And you can't break out of my ninja binding technique because I sealed your chakra with my three pronged pressure point attack. That's why your a bitch, and I ain't."

Also it really does build supense, when the main character is thinking to himself, "oh, shit there is no way out of this. UNLESS..."

What Manga is this? It seems strange, but interesting.

Yeah, really.

If I knew I was about to win I would talk shit too. It's kind of like teabagging in Halo... maybe.

Just the same as in western live action shows. One of the main characters (if there are more than one, think Power Rangers) gets caught and tied up in a secret basement, villain spills the beans, MC frees himself and with the knowledge acquired from the villain, rescues tha world, dudes.

But yeah, I figured it'd be mainly taunting and telling the audience what's going on.

Yup. It's either:
1. Author believes people are too stupid to figure it out on their own.
2. The strategies are ludicrous, and therefore need an explanation before the strategy can even begin to make sense (most of time, it's this one).

OR

3. Author wants an obvious strategy to seem badass, and makes his character shine by giving them a long descriptive monologue.

Katekyoshi Hitman Reborn