One Slicer toy as a straight redeco of Wheeljack (1991), one Slice(r) toy as a redeco of a toy (Downshift) that was allegedly supposed to be Wheeljack (2010), and a redeco Wheeljack toy that homages Slicer (2012).
So in a way, you're both right... as there are three "Slicer" toys or homages, but only one that was a redeco named as Slicer of a toy named as Wheeljack.