Now hold up. Some manga are better than the anime, like, for example, Samurai Deeper Kyo and X (Better than the movie, not the TV series.). And some anime series are better than the manga, like Evangelion, Trigun and Hellsing. I only like manga better because there is a manga version of Steel Ball Run and no anime version, as well as all the rest of the Jojo series. (That, by the way, flat out destroy all other action anime and manga on account of their bizzare nature, creativity, original artistic style, and musical references.)
Totally Anime, Fighting is LAME in comic forum. Always has been always will be. And I find anime since it's made second they take what worked and remove what didn't work from the manga and tweak it until it's better. On top of that Manga is usually black and white which is mega downside in my mind.
But arguments occur in anime forums too. Also, anime sometimes actually compresses the artistic value of the manga into a simpler, more televisable form. Of course, it is in color, and in some cases that is a serious plus. But also, some series, like X, had a sort of artistic flourish, and this, as beautiful as the TV series was, could not totally be captured in the computer shaded cell. Every page is like a small mural or painting. And in some other cases, the anime and manga have virtually the same artistic quality and same plot. I believe, for example, that the Full Metal Alchemist Manga and Anime are of comparable quality. It really does depend on the show. And artistics are only one part of it. A lot of anime skips little plot segments that the mangaka could incorporate as flavor chapters or little interesting bits that made the comic what it was. On the flipside, anime has voice acting, which sometimes accentuates the tension or mood of the plot. Unless someone reads the manga to you, or you read it to yourself, which is, erh, kinda weird. But yeah, it's sort of difficult to just say if one is better than the other.
(EDIT) Oh you meant fighting is lame in comic FORM. Okay. Well I don't agree with that. Maybe you've not read Blade of the Immortal, Jojo's Bizzare Adventure, Hellsing or Samurai Deeper Kyo, but all of these mangas have very fun fight scenes. You can't say, of course, that the fight scene is fast paced or as fun to watch. But then again, they can't liberally recycle animations like DBZ or even Rurouni Kenshin in some episodes. The real challenge for a good artist is to catch the character in the moment of fighting, to convey the intensity and the power. Of course, if fighting is the biggest element of Japanese anime/manga to you, then of course anime is the natural choice.