Here are the stat lines for both players.(Per Basketball Reference)
McCollum: 40 minutes, 57 FG%, 66 3PT%. 41 Points,8 Rebounds,1 Assist,1 Steal, 1 Block.
Lillard: 39 minutes,46 FG%, 33 3PT%. 34 Points,5 Rebounds,3 Assists,2 Steals,1 Block.
In short, neither got any help from their teammates. Evan Turner started and finished with 12 points and Moe Harkless had 11 points. But those are the only two players to score in double digits besides Lillard and McCollum.
The Blazers bench was sloppy, only scoring nine points.