Don't really care about the real-life perormance, they look cool. Also why i always use Dragunov sniper rifles and Sukhoi fighter jets when available

And i have a mod that allows me to forge an akaviri katana from any material, currently ebony

I like how they are included in the game, it adds variety in weapon design which is a good thing.

As for the whole Katana VS. European swords I have this to say: They are both blades of metal made to kill people, the european swords just had to evolve more and faster since they weren't used by a secluded isolistic culture.

This.
Again I'm not expert on midevil history or swords, but it seems like common sense that a country more involved with war is going to produce better weaponry than an isolationist one. Europe was on fire with war for hundreds of years, Japan? Seldomly.
Besides, I thought the spear and pike ended up dominating the wars of europe, with swords taking a backseat...

Katanas fall into that romanticized weapons trope that is commonly perpetuated by those ignorant of the truth and because of propaganda.
List of weapons that are overrated.
-katana
-English Longbow
-magnum
-Greek Sarissa(spear that was popularized for quite some time way back when, no one mentions it now)
-roman gladius(most people are actually thinking of a Spatha when they think gladius)
The list can go on but I'll stop.

Both European and Japanese swords were mythologized. However, they ended up taking different trajectories.

In Europe, medieval warriors, and their swords with them, were played down as simple and brutish. As a result, European swords have often been portrayed as little better than sharpened metal clubs. I've seen this attitude traced back to the Victorian Era, when people thought they were superior and more sophisticated with their "gentlemanly" fencing.

In Japan, it went the other direction. The Japanese had long had a reverence for the sword. It was a symbol of status and power, but also managed to achieve some religious significance as the embodiment of the four elements. When the age of the Samurai came to a very sudden and abrupt end, Japanese society underwent some radical changes. It's little wonder, then, that people began to look back longingly at the age of the Samurai and began to romanticize it. As they did, the samurai were elevated to the level of demigods. The katana, as the symbol of the samurai, was elevated with them. And that elevated status of both warrior and sword was carried into literature and film.

This was all likely aided by the fact that Japanese fencing techniques had been codified into a system of martial arts whereas European techniques has been lost and forgotten. No one really knew how Europeans fought with swords, so what you got in film and on stage was a depiction based on the Victorian attitude. It wasn't until the last couple of decades of the 20th century that people began to earnestly try to reconstruct European fighting styles. Just like in Japan, the old European fighting masters opened schools. Some of them also wrote down their techniques in books. It was from these fighting manuals that they began to reconstruct European techniques. What they found was the their fighting styles were actually quite sophisticated. In fact, they were on par with anything out of Asia.

As a side note and clarification, yes, there was some romanticizing of the European knight. That romanticizing focused mostly on courtly life and chivalry, much as bushido was similarly romanticized. It did not really carry over to the battlefield, though.

bolars oathblade...i like dragonsbane better for my master swordsman turned dragon hunter for hire

Katanas make good decorations for my house, but thats pretty much it. I have Bolar's oathblade on display above my bed in whiterun

I don't know about Katanas and Magnums, but you are completely wrong about long bows and the Sarissa. Both of these weapons provided a superior edge in their time. I would hop in your time machine and ask the Midieval French and the Ancient Persians how "overrated" these weapons were.

Yes they were advantageous. However that does not mean they were still not Romanticized to all hell and back. People made wild claims about the Longbow for many years that are untrue like piercing plate armor at 300 paces and such. The English Longbow was very much a weapon hyped by its own success into a Nationally Iconic weapon. As for the French, the English ended up being driven out of France now were they not?. As for the Sarissa? Yes it gave advantages to its users but just like the Longbow it was the training and the men using it that made it useful. In of itself there was nothing really fantastic about either one that gave it unearthly advantages over others of its kind.

People have been romanticizing weapons for all time. Just some weapons stuck in peoples imaginations. So while something may be useful, it can still very much so be overrated.