Prediction time. We are yet to witness the ERS capabilities of a rejuvenated Honda and Bahrain demands a lot of power. It would be interesting to see how well the energy recovery works on that Honda. Ferrari should be back to their normal performance. If anything, the cooling down circuit in the night and the harder rubber (compared to Melbourne) should be of good help too. Racing point's upgrades didn't work as they had hoped for. Hopefully, they have figured out the reasons and fixed it.
Qualifying
1. Mercedes
2. Ferrari - +0.3 to 0.4
3. Red Bull - +1.0 to +1.2
4. Haas - + 1.4 to +1.6
5. Alfa - + 2.0 to 2.2
6. Racing Point - + 2.2 to + 2.4
7. McLaren - +2.5 to +2.6
8. Renault - +2.6 to + 2.7
9. Toro Rosso - +2.7 to 2.8