Fuel consumption is better in Cultus in comparison to Civic and the difference is significant.
In terms of resale, both cars have a good resale market provided the condition of the car is really good. However, if compared, the resale of Cultus is slightly better than Civic based on the difference in the model.
Drive comfort is almost similar, however, Civic being a sedan will give you a better drive comfort on long routes, and Cultus being a hatchback will be a little less comfortable in terms of drive.
It's not 100% true as it is quite possible that you can find Civic kept with extreme care and engine condition is almost like new and it is also quite possible that you can find a Cultus with a ruined engine. It's all about finding the right car, but yes, you're right that the possibility of finding a car with a good condition engine is high with Cultus rather than Civic.
The rest is your choice.
I hope it helps.
Good Luck in finding a good condition car.