Cavs didn't win first year when LeBron insisted they trade Wiggins for Love, and Wiggins has progressed a lot since coming into the league - he'll be a bigger star than Love ever was or will be. But yes, winning a championship is important. One could argue, however, that the league wanted Cleveland to win because the final 3 games of the finals last year were officiated brutally in favour of LeBron.
I'll defend the Kevin Love trade for Andrew Wiggins based on:
1. Wiggins and LeBron play the exact same position. The only way it would work is if Wiggins can play the point/forward position and play lock down defense the way Scottie Pippen complimented Michael Jordan.
Based on what I have seen from Wiggins, his weakness is his defense. It will never be elite. He very may become an all-star player, but his strength is his offense, which never would have been showcased playing next to LeBron James.
Wiggins would not have been mentally prepared to play big minutes in the playoffs. It's easy to score a lot of points on a bad team. It's much harder to be a role player on a very good team, especially if your role doesn't showcase your strengths.
3. Kevin Love has been a better player than Wiggins the past 3 years. Wiggins doesn't know how to play winning basketball. He maybe putting up points, however the Timberwolves haven't won many games the past few years. Obviously that isn't all his fault however his team has enough talent imo they should be at least a .500 team.
If the Cavs had kept Wiggins they would not have made the NBA Finals in 2015 (should have won if healthy) and certainly would not have won the title in 2016. In 3-5 years the Timberwolves maybe crowing how good Wiggins is while LeBron and Kevin Love (if he's still on the team) are on the decline however it is not necessarily a given that Wiggins will be a star.
He's a good player however I see a lot of flaws in his game. In 3-5 years I can see him being an all-star player but I am skeptical if he is going to be top-5 elite player like LeBron, Kobe, Durant, Curry, etc...
It was a good trade for both teams.