B18C7 1.8L
147kw at the fly

B16A 1.6L (AUS)
118kw at the fly

B16A 1.6L (JDM)
120 to 126kw at the fly depending on version

So the main difference is 1.6L v 1.8L

The question is, will you be boost the B18?

Boosted B16 is way faster than a NA B18C7