In the Pakistani system (and most other countries), Chevy trucks cannot compete with Toyotas. The main thing where Toyota is "good" is 4x4, offroading and durability particularly in such driving styles.
You would be wise to stay away from Chevrolet trucks if you need engine power, torque, 4x4 use and the like.
The only one issue with the Toyota Vigo is that people say when low quality local diesel is engaged with the D4D engine, the fuel pump responds and demands very frequent and impractical replacements as well as excessive care.
Talk to some Vigo owner.