My point was that you won't put enough force on either of them to discern a difference without a cheater bar. Maybe if it's a very small wrench.
I'd like to see you torque a 1" harbor freight wrench to the point of failure with your bare hands. I don't think you could do it even with your full body weight or something to push off of.
There are certainly cases where products differ enough in quality that there are pragmatic reasons to avoid some brands and prefer others. But I think standard wrenches are a poor example if you're trying to convey this point.
Sure. It's usually cheater bars that bend/break cast wrenches. Not common for around the house stuff, but very common for rusty bolts on cars, for a shade tree mechanic. Though the tolerances on cheap wrenches can certainly round off nuts even in around the house situations.
