By FOX Sports Staff
The Finn, who won the season-opening Australian Grand Prix, could only qualify in seventh for the race and finished in the same position. Both he and Grosjean were stuck for large parts of the race behind the frontrunners and could not wrest ahead of Ferrari's Felipe Massa.
The Enstone-based marque did show that the car had the pace to compete with the RB9, the F138 and the MP4-28 although they could not get their strategy right for the race.
Boullier, however, does not wish to read too much into the sudden dip in form and holds the volatile nature of the Pirelli tyres as being responsible for the result.
"It is a prediction we had after the winter testing that it is going to be very, very tight," Boullier told reporters in the Sepang paddock after the race.
"I think you can expect, mainly because of the tyre management situation, a different race winner each time.
"But we can say we are definitely in the top four. Ferrari, McLaren, Red Bull and us are very, very close."
The Frenchman instead believes that the rain early on in the race couple with their low starting position made it difficult for them to go up the order within the race.
"First it was [wet] qualifying and then we did not make the best start ever," he added.
"After that, we lost a lot in the first stint compared to the leaders, especially Mercedes.
"If you then compare the race pace after that, we were not bad. We were there.
"In Melbourne clearly we had an advantage because again some circumstances during qualifying and Friday practice did not help some teams to get their set-up ready."
Raikkonen still is near the top of the standings and is just nine points behind championship leader Sebastian Vettel.