The 2.7 4X4 petrol is as underpowered as a similarly equipped Prado TX, TX-L. If you've driven it and are fine with it, then good. There are thousands of Prados on the roads with same engine all over the country. I drive a Sigma4, however, the 2.7 4X4 is perfectly capable of traveling anywhere in Pakistan.
It does not feel as agile as a Corolla and Civic 1.8, but it can get the job done. Pretty much anything you throw at it. Good luck.