Because NHC has Gulf Shores Landfall and OFCI has Pearl River.
Thanx.
I suspect the difference is a result of the times corresponding to the NHC forecast plots. The Evans OFCI plot is marked 0600 UTC, the NHC track you reference was 3 hours later at 0900 UTC or Z. The 0900 UTC plot probably reflects and update from the previous one shown in the Evans image.