This is an average of the 1976 and 2016 results, which is an imperfect proxy for a Carter v. Ford race, but still works as a proxy:
Yes, Trump's 2016 WV win was larger than Carter's 1976 win there. Conversely, though, Carter did in fact win AR in 1976 by more than Trump did in 2016 (in fact, in 1976, Arkansas was the second most Democratic state in the country after Georgia).
EDIT: I did not take Maine or Nebraska CD's into account; data from that era clearly suggests that the results would've been Ford/Trump carrying all 3 Nebraska CD's, and the state, while 1 Maine CD votes for the Republican even as the other CD, and the state, go Democratic. (Yes, Hillary's margin in ME-statewide was greater than Ford's, surprisingly enough). The electoral college tally for the map depicted above, under 2010 apportionment, is 310-228 Carter-Ford; the "actual" number is 309-229, since 1 ME CD is still won by Ford.
