Upvote:4
All four programs, TSA PreCheck, Global Entry, Nexus and Sentri give you a Known Traveler Number to register with the airlines. Basically, it's essentially the same thing no matter how you get it.
IF there is a difference (huge if), they'll never say but I have been using my GE KTN for years now with no issues.
For you, it's very easy to test. If you check in early and don't get Pre with one KTN, just go to the counter, change the KTN and have them re-issue the Boarding Pass. This worked for me after mis-entering the KTN when I flew an airline for the first time.