Lillard was quiet for like almost 3 quarters (between end of 1st til mid of 4th, he scored 2), CJ anonymous for most of game except last 4 minutes. You didn't lose because of lack of perimeter defense, but because you shot 14% from 3, and rest of team except Lebron were 32% from the field. It was close game until end, you lost because your offense is awful. You played catch up for whole game but were let down offensively by 4 of the 5 players on court at all times.
Unless Bradley would be shooting really well (or can stop Lillard from hitting couple of 37 feet bombs out of nowhere), not that detrimentally missed (but missed still, D role player allways useful), because KCP replaced his role when they moved Bron to PG, and KCP/Caruso took turns on Lillard adequately.