They weren't tight, they were honestly struggling with the Cavs defense, games 5 & 6 were still close and it took runs for the Warriors to end them. They finally figured out that their PF had to dive to the basket on those hard shows, but still the Cavs defense held tight, their offense is what let them down.
The Cavs bigs will hit threes, they will spread the floor and leave someone one on one trying to keep Thompson off the glass. This Cavs team is better than the Thunder, how much better is up for debate but they can pose some of the same problems. And it's not like they have to keep Love out there either, if his defense is that big of an issue he wont play.