Bro I don't own Fielder Hybrid, but I own Axio Hybrid
Both cars are identical,
Same wheelbase, same engine, same suspension, car is 100% same from drivers perspective.
Only difference is Axio has form of Sedan and Fielder is hatchback, based on personal preference some people prefer sedans other hatchback, I believe in some practical situations Fielder will outnumber Axio in convenience because it has practically more space.
I never drove 11th Gen 1.6 Altis, but I'm sure axio/fielder has a better pick up because of electric motors (almost instantaneous torque). Suspension is very soft (it is actually Japanese variant of 11th Gen corolla), offers more safety features, climate control is in all variants,so overall it has more to offer.
I feel Pakistani corolla is more spacious and wide so it has its own benefits,
Axio/Fielder is more fuel efficient for city drives also on highways I got remarkable figures.
Main disadvantage is ground clearance, with 3 people on rear seats it touches the dangerous speed brakes of our roads(Inatalling spacers will resolve it)
Also JDMs are not good for resale value, if you are planning to change cars more frequently then JDM should not be your car. (unless it is vitz or Mira)
Dont hesitate to ask if you have any other queries.
Thanks 