Chelsea is very ambitious in looking for opportunities to win trophies in the FA or League Cup competitions, maybe Pochettino will try to raise the enthusiasm of his troops to rise in other paths besides the EPL. But Brighton also won't let Chelsea party, they will fight as hard as possible to win tickets to the next round. Morally, Brighton is superior.
I understand that league cup is totally different from the premiership competition, however, I don't know what you are seeing in Chelsea but from all indication,nothing have changed as regards the Blues. Tonight the may still loose to the Seagulls who are in the best form, winning their recent two away matches and scoring seven goals while conceding only two. This is what Chelsea have to contend with and I don't seek the weak Chelsea pulling any surprises.