Mark Webber isn't taking Red Bull's testing pace at face value, saying his former team isn't interested in any pre-season "shadow boxing" antics.
The timesheets in Barcelona offered only a limited glimpse of a Formula 1 pecking order which is very relative at best.
"When the grandstands are empty Red Bull are never interested in getting involved in the shadow boxing," the former Red Bull stalwart told ESPN.
"That’s typical of Red Bull, I wouldn’t read anything into winter from them.
"Unfortunately the mileage wasn’t great, that’s the only thing we can read into that, pace-wise it’s impossible to read anything."
The Aussie admitted however that Red Bull Racing's task is complicated this year by a power unit which has yet to match its rivals.
"They need to do a phenomenal job on aero to claw back the engine performance of the opposition, Ferrari and Mercedes.
"I think all will be revealed as whether they’ve done enough with the car to challenge for pole and front rows and win the start and control the race, which is going to be a tall order but totally possible."
Ferrari 's pace in Catalonia, validated by Kimi Raikkonen fastest lap overall, did impress Webber however.
"Ferrari were the surprise, even though there was shadow boxing to a degree, operationally they look very good.
"It only takes one thing to get screwed up in the first race but they look pretty good and that’s on a match with Mercedes in terms of reliability, by the looks of it at the moment, so that’s a huge feather in their cap."