Display value's a bit of a mix of production quality and play value, I don't consider it a separate thing. As far as display pieces go, I think they look euqal because they're both very well made and very nicely represent the characters. The only slight edge is your display options are more versatile with the T-1000 because of the extra parts he comes with, but once you've chosen your look, neither figure stands out much from one another as far as quality, the T-1000 might get slight edge because of how odd donut heads and split heads and hook arms look next to a whole dude in a biker outfit.