People see the big star on Pressley's hat now and it clouds their vision as to who he actually was when he was with the Twins. Things are looking up his first 3 years, he was progressing, except in his 4th year in 2016 he regressed somewhat. Then he had a 4.70era and 1.5 hr/9 in 2017. What I remember was he would be blowing guys away with his fastball, then he would toss a curveball up there for some reason and watch it fly over the fence. He was frustrating, remember? He has a bounce back start to 2018 and they trade him with 1+years of control left. I think they call that selling high. Yes those 1+years after the trade he was awesome. Would be have done the same with the Twins? Unanswerable. Anything he did after that is not relevant.
Let's recap. The Twins spent peanuts on a rule 5, got 4+ years of an above average reliever, flipped him at peak value for 2 prospects that it is highly probable will play many years in the bigs.