Most of the utes that you are looking at will be partime 4wd ( no AWD) so the 2wd/4wd argument is moot as you cant really tow in 4wd. saying that the 4wd chassis are usually stronger so there is that.
re: the foton with the "cummins" engine these are built under licence, and my experience with "under Licence" builds are they are usually not as reliable nor easily fixed( parts can be a hassle) as the genuine gear,This is coming from the Bus side of my business, been a few bad stories about the chinese built buses running cummins and allisons having issues with back up services, the owners were told go see a cummins dealer they will sort it, no they didnt the parts were just not quiet the same as they genuine parts to make fitment a hassle.
I would see if you can stretch your finances into a namebrand,(I will always push a toyota but that is what I run and so does my business)