DOES THE HDK SUSPENSION K-MEMBER HANDLE BETTER THAN A T-BAR SUSPENSION?

If I haven't mentioned it yet, I'll do so now.
I respect and give credit for someone finally stepping up and showing what these aftermarket parts are capable of doing.
I won't be convinced to buy the products but it is good to know that some people have had success with them. I hate to see money wasted or to see people suffer failures due to improper manufacturing, poor welds and bad engineering concepts.
I don't see these as being nearly as durable and long lasting as a well thought out and improved torsion bar system but in truth, I doubt the buyers of these coil over systems are driving 30,000 miles a year on paved and dirt roads. It is quite possible that these aftermarket systems may last many years without any repairs since most of us drive these cars less than 5000 miles a year.
I don't like what Magnum Farce put out. That dorky looking rock band roadie that ran the business put out some crappy parts.
I don't like the cantilevered tie rod connection that RMS and others have.
The tubular K members just don't seem nearly as robust in preventing parallelogramming like a stock K member does.
If the body gaps are consistent on these Dusters after several autocross events, maybe that is a non issue.
On a related note....
For 36 years I built houses, schools, shopping centers, apartments and other buildings. We were told for years that all the straps, brackets and reinforcements were necessary. I've stripped drywall off of 70-80 year old walls to find rotten studs, improper nailing and no structural reinforcements at all yet the house was still standing. The doors and windows opened, the floors didn't slope. It got me wondering how over the top I've been building things all these years. Maybe we could have gotten by with a lot less of that stuff.
Is it possible that the Mopars were over-built too?