Valtteri put in strong performances at the last two races in Bahrain and China, narrowly missing out on race victories but fighting hard to the flag.
While the Finn admits the margins are close between the leading teams, he's certain the W09 has the speed to win races.
"The competition is really tough," he said to the assembled media in Baku. "It's three teams battling for wins, just as we were expecting after winter testing. That's the situation.
"It's all about getting everything right in the races. I think we have had a car in the first three races that could have won, performance-wise, but there has always been something happening.
"In Bahrain we got very close to the win and also in China. The speed is extremely close to Ferrari and Red Bull.
"Yes, we are disappointed not to have won a race so far. This is the game this year. There are going to be six cars fighting for the win.
"We really need to get everything perfect and we haven't done that yet. It doesn't panic us, it motivates us.
"We just need to keep it together, try to find any small performance gains and I'm sure it will come."