I think Binotto said 7 Tenths is the gap on an average (maybe) & 60% is on the Engine Side. Let us assume 4 tenths Engine + 3 Tenths Aero. Ferrari is good on slow corners (as quick as RB). RB will bring further updates & Mercedes may also bring if they find something significant (a couple of tenths odd). So there will be a gap even if the engine upgrade covers the 3-4 tenths gap that they have (If it is that big !)
But it will be interesting as without upgrades (significant to others), they will go ahead of Mclaren & Alpha Tauri/Ashton Martin/Alpine section. If they are 3-4 tenths down on RB, Leclerc will be ahead of Perez in most tracks (given Perez is 4-5 tenths behind Max on qualifying). So, you can expect more P4-P5 Qualy positions, beating Norris & occasional podiums as well.
That is an optimistic scenario assuming significant engine upgrades gains + Not Much upgrades from other teams !