Night 15 was easily the worst show of the World Tag League thus far, with one decent match and an absolute DUD. You only really needed to see CHAOS vs. Nagata & Nakanishi if you're a completist. As for the Bullet Club vs. Suzuki-gun bout, those are five minutes I'm never getting back. Don't bother watching it. Use those five minutes for something that's actually useful or productive.
This was probably the most predictable night of the entire tour, in terms of match results, as you had two of the top teams in the heavyweight tag team division (including the current IWGP Heavyweight Tag Team Champions in KES) going up against two teams that had young lions on them. There was no question that KES & War Machine were going to get wins here that would keep them alive in the B Block, but their opponents certainly didn't go down without a fight. You don't really need to seek these particular bouts out (unless you're a completist). The only thing you need to know is who won their respective matches.