I see.
Thing is; our opinions and perspectives about Chinese made 70cc motorcycles change over time!
Back in around 2000; everyone would recommend you Sohrab.
Later in 2005, people started recommending Pak Hero.
In 2007, our priority went to Metro Motorcycles.
Then came DYL Dhoom in 2009-10.
In 2012-15; people started clamoring about Road Prince.
And in recent years, everyone seems to be recommending United Motorcycles.
In my personal humble opinion; both are solid choices. If it was up to me; I would closely inspect both motorcycles for deficiencies in build materials, paint job and other tidbits, talk to the owners of both motorcycles and ask for all the mechanical problems they've had to endure, ask various mechanics for recommendations and then finally decide.
But keep in mind that these differences will be minor and neither will last you anymore than 5-7 years. So don't worry and buy the one that feels right to you!
Good Day!