NBC SN (rebranded multiple times) programming:
NHL
CAA and Ivy League Football
CAA, Ivy, A-10 Basketball
College Hockey
Some Formula One and Nascar
Spillover Olympic coverage
vs
Fox Sports 1 and 2:
MLB
US Open Golf (and other USGA events) -taken over from ESPN and NBC
UFC MMA (exclusive)
Pac 12, Big 12, Conf USA Football
Big East Basketball
FIFA Men's and Women's World Cup Soccer
EUEFA Europa, EUEFA Champions League, CONCACAF Champiopns League Soccer
Formula 1, Nascar racing
Boxing
Horse Racing
I took this last part from the wiki on FS1:
Despite being established well after ESPN and the CBS- and NBC-owned sports networks, Fox Sports 1, even before commencing programming, has been seen as a legitimate and serious competitor to ESPN,
[9] in part due to 3 factors:
[ ]Audience reach - FS1 was expected to reach 90 million households at the time of its launch, most of which through the spot Speed had occupied on cable/satellite channel lineups; by comparison, though that number is under ESPN's total reach (99 million homes), it is also more than the 77.9 million homes NBCSN reached at the beginning of 2013.[10]
[ ]Brand awareness - Fox heavily promoted FS1's launch through its various TV, online, and social media platforms, including appearances of FS1 talent on existing Fox programming and the online posting of its shows' pre-launch rehearsals.[11]
[ ]Programming strategy - Fox was aggressive in seeking and securing major content for FS1, employing a strategy to obtain rights to popular sports and leagues that they believed other networks underserved, as well as creating high-profile original shows (see Programming below).[11]
If I were betting, I'd bet FS1 and FS2 make do much better over the next decade than NBC Sports Network.