For a few weeks I didn't have access to rings so I used a TRX trainer for ground rows.
I made significant gains during those weeks but. . .
When I went back to the rings I had regressed quite a bit.
What's the difference? Is it that the round grip is more of a challenge? Is it the difference of two anchor points vs. one (the ring straps hang straight down, as opposed to going at an angle.
I think the difference is real whatever the reason.