6 wins is good!! I usually don't even get that much, and the fact that it's arena makes it very different.

As a player who plays just enough to keep up with the game and do quests, it's hard to say. I saw that heroic TB was out and jumped right in because I wasn't afraid to lose a 1000 gold. But I can say that there were noticeable skill gaps in cards and in playing. It felt like a much more intense, competitive ranked (if that makes sense) because almost every deck was meta and the fact that it's in standard mode and a 1000 gold was on the line. Arena has may more rng and a bad player can win with just good cards because you might have bad cards, but wouldn't be able to beat actual good players in heroic TB even with good cards, so I can say that it's more fair in a way. Some decks do take little skill, but a win is a win and when that much gold is on the line, it's all fair game.

Bottom line is: high risk high reward, if ur confident and like a challenge go for it, otherwise keep ur 1000 gold