The Latics have already raised a few eyebrows with wins in two of their three games, but it's no surprise to Koumas, who is enjoying life back at the top after his £5m move from West Brom.
Jason was forced to pull out of international duty this week with a stomach bug but he's confident that he will recover in time to face Wales team-mate Craig Bellamy at West Ham on Saturday.
He said: "We've made a good start but it could have been better. If we'd had a bit of luck in the opening game at Everton, we might have had three out of three.
"Some people have got us down as relegation fodder but there's no chance of that. We have a decent team here, some good footballers, and we are not surprised at the start we've made. I see us winning a lot of games this season and I just can't see it being a struggle.
"I'm happy with my own form but you do need a few games to really get going. Once we get to know each other, it can only get better.
"There are goals in this team, we are confident, and as long as we keep it tight at the back, I'm sure that we will win a lot of games.
"For me, it's great to be back in the Premier League. It's the only place to play, and you look forward to every game.
"We know it's going to be tough at West Ham. The last time I was there with West Brom a couple of years ago, we were 3-0 down and still won 4-3."
Wigan have decided to offer reduced admission prices for the Carling Cup tie against Hull next Tuesday (7.45pm). It's £15 for adults, £10 seniors, and £1 for under-16s. Season ticket holders qualify for £5 off.
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