As opposed to any idiot who grinds every tournament with previous tournament winners? When you have something to say that people actually care about, rather than 'hey look how long my dick is, i have five marks from tournament grinding', then you can post in my threads.
edit: that may have been a bit harsh. However, I will have to admit that rootranger does have some good points to address. Anybody can post a good arena deck by looking on the forums, although you'll probably have better luck making your own if you have any idea what you're doing. Most people can do pretty darned well farming fgs or arena too by copying decks, though at least there, there is the element of play skill, and people are on their own there. There's more skill in building good decks on your own than playing them in this game, though.
And I do agree that having ultra-rares show up in platinum spins with the same frequency as, say, a pharaoh, is just ridiculous. That was one reason I proposed a 1:50 chance for it, but even that might make it too easy. Eventually, though, I hope to see the game grow and hopefully reward skilled players.
And lastly, those two decks that root linked to with 57% and 54% win percentages... I know from my own play experience that there's better decks than those, so farming platinum isn't really an issue once you have enough upgrades. It might go up with the new shards, but the arena decks will get better with new shards, too, though probably to a lesser degree, since player intelligence > AI.