Carter will undoubtedly be good if he stays focused on football.
I would have taken a flyer on Carter over an undersized corner. Regarding draft value, the two positions are not that close. And Jackson seemed like a serviceable starting corner, which lowers the relative value of Witherspoon on our team, and that's not even mentioning the slew of young depth at the position. Meanwhile, our defensive line was a dumpster fire last year and still is a little weak up the middle.
As long as Witherspoon can play, I'll be happy. But I'm taking Pete's Troy Polomalu comparisons with a grain of salt until I see his tangible impact on the field. We'll see how things work out.