AndSure, it's possible that the tanking Dolphins will finish the season as one of the worst teams in NFL history. But it would be wrong to view Jackson's Week 1 performance solely in the context of defensive quality. The passes he completed were not easy, based on the positioning of defenders and the distances the ball traveled in the air, and he was pressured on 36.4% of his passes, the sixth-highest rate in Week 1.
Most notable, of course, was that the Ravens did not feel compelled to utilize the run-heavy scheme they tied Jackson to last season. He threw the ball on 20 of his 22 dropbacks, carrying only once on a designed run and then scrambling one other time. (His third "carry" was a kneel-down.) In 2018, Jackson carried on a design run on 23% of his total plays and scrambled on 13% of his total dropbacks.
His passes posted a relatively high degree of difficulty, in part because they averaged 11.9 air yards past the line of scrimmage, tied for the second-most in the NFL. And while Jackson did exploit some busted coverages, the Ravens actually had the fourth-lowest percentage of open receivers (35%), as defined by the instances when there was no defender within 3 yards of the target, per Next Gen Stats data. Only 5.3% of his passes were judged in ESPN charting to be off-target, the fourth-lowest rate in Week 1. And using the NFL Next Gen model for completion probability, Jackson completed a league-high 24.8% more of his passes than an average quarterback would be expected to.
I did find this surprising from... https://www.espn.com/nfl/story/_/id/27580215/week-1-nfl-qb-awards-jackson-shines-wentz-throws-dime