If you are talking about Trinity Monster Horsepower, it is good fuel. My 3.3 loved it.
It has ran well in all my engines.
Fuel does not cause engine failures, Operator error and poor quality engine materials/ manufacturing tolerances are what kills them when they die that early.
I'd bet you those guys did not retune properly for the fuel swap.
Byron's is the most widely used fuel in the racing community, it's for a good reason too.