This year F1 is set for a very close battle in the midfield with Bob Fernley saying there is a "cigarette paper" separating those vying for best of the rest.
With Mercedes and Ferrari looking set to run away at the front of the pack, the race is on to be best of the rest behind the leaders.
Last time out in Australia that went to Daniel Ricciardo with Felipe Massa right behind him while Force India's Nico Hulkenberg brought his VJM09 home in seventh place.
"I don't think Williams has moved away from us," Force India's deputy team principal told Motorsport.com.
"Toro Rosso has done a great job and Red Bull continue to do a great job. But there is a cigarette paper between us all.
"And track circuit elements specific to certain teams means you will have to leave it a few races to see."
Fernley added that tyre management, which varies at the different tracks between the teams, is just one aspect that is set to play a role in the outcome.
"Red Bull was very good on tyre management [in Australia] and it was a circuit that didn't really show off its weakness in the power unit," he said.
"I think you will have swings and roundabouts between all those teams. Each will be strong at different circuits, and it will be who can get across the board the most consistency."