I think you are on the right track in your thought process and should just keep'em....
"G" rated is the key here not the company that makes them. G rated tire is rated above/beyond normal use on a fifth wheel while E rated tires are usually maxed out for speed/Weight but folks still run'em at 75 mph. MOST of the negativity on the china bombs don't realise or mention they are replacing those oh-so crappy E rated tire with a G rated tire and blaming the company that makes them. It's like running your truck in 2nd gear, red-line RPM all day and blame the MFG when she blows?