Out of the 21 races, Ocon out-qualified Perez 16 times, with the average gap at the end of the year reading -0.448s in favour of the Mercedes junior driver.
However, Perez finished 12 points ahead of his teammate in the driver's standings, with the Mexican ending up in eighth place, one spot behind the 'best of the rest' position.
"I think in qualifying he probably had the upper hand although the gap between us in qualifying is less than a tenth," Perez said. "He was more often in front in quali than myself. But I think the gap in the race is much bigger than qualifying."
"In the race I thought I did the bigger difference, always on the pace, the pace was a bit stronger in the race," the 28-year-old added. "We were very close again but as you say I think he was just a little bit better in qualifying and I was quite a bit better in the race.
Perez managed to bag a podium finish at the Azerbaijan Grand Prix, while Ocon's wait for his first continues. The Frenchman won't achieve it in 2019 however, as he will sit on the sidelines after being ousted at the Silverstone squad by Lance Stroll.
Bahrain International Circuit - Winter testing