... a computer.
According to Jeff Sagarin's rating system, Portland is the 9th best team in the NBA, and every team we have played is a "top 16" team. According to basketball reference's SRS rating (basically opponent adjusted point differential), Portland is the 6th best team.
In both cases, a surprisingly strong strength of schedule is the reason for the slack.
The sky isn't falling. It's just a good team going through a tough stretch.