Actually those are pretty good weights.
There aren't too many good quality forged wheels that weigh drastically less.
We do champion Motorsport wheels and they are about the same and they are top notch forged wheels too.
Of course you can get some lighter wheels... some of the cheaper "Forged" wheels I have seen are actually lighter, but that could mean bad engineering and not enough support for the weight load of the car and even air pockets despite Forging that will eventually weaken the wheels.
Different manufacturers use different techniques and methods, and they all yield different outcomes. Some of them make really good quality cast wheels, such as Enkei, Yokohama, IMO that are superb quality.
The most important thing is that the customers are happy and have confidence in the strength and quality of the wheels. We do our best to only suggest wheels that are of the highest calibre.