The point is there is a lot of confusion and justifications out there about "cages". The most common answer to someone pointing out that there are glaring discrepancies in aftermarket versions is to say that "something is better than nothing". While on the face that is a true statement, where it fails is you don't have nothing now. You do have some protection and while it does have some limitations that require you to need a crystal ball to predict how to roll your rig and stay safe, the same is also true for the vast majority of aftermarket options as well.
You can't have a cage that will protect you correctly unless you tie it into the frame correctly, get windshield spreaders in place, an X through the firewall and then tie all that in properly through to the front of the frame. That also necessitates door bars which requires ingress and egress through the windows. No one is going to do that so you wind up with a lot of compromises that generally tend to cause one to wheel with a bit more confidence than is prudent. Especially since the other side of that equation is a proper 5 point harness, a helmet, window nets, and wrist restraints. Yeah I know, I mentioned restraints but don't get all excited, they just keep your arms from flying out the window in a roll. Not the ones you were thinking of.
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