Most store chains and everyday employees don't know tools like many of us. They just put it where they are told, and marketing places stuff "like with like".
And most people don't know or buy quality - the cheaper tool almost always outsells the more expensive (even if it's better) tool.
I was thinking Stanley needs a ton of merchandise to supply Lowe’s and fell short on the Craftsman grips and just used the Vise Grip ones instead. There was a whole hook of them so it wasn’t a one off mistake.
It's inevitable that those two are going to end up in the same section. Stanley has too many brands on it's hands and I bet they wanted both versions of those to be sold when they negotiated for shelf space.
In my experience someone loaded the wrong paper label in the packaging machine for that days run, or the wrong color grips. I remember years back we got a Buick in with Oldsmobile striping and stickers on one side and Buick on the other. It happens.