NO....b16b final at 4.400 only...b16b and b18cr have the same ratios from 1st to 2nd gear, 3rd to 4th diff...and final drive the b18cr longer...
So the difference is like this lah...
4.785/4.400 = 1.09
Say you are travelling with the b16b at 150kmh @6000rpm, the difference between B16B and B18CR is that for B18CR your RPM will be at 6,525rpm...which literally means you hit the 150km quicker than the b16b by 500rpm...