Pau is an elite defensive rebounder. Just because Kevin Love racks up a lot of numbers on a lottery team doesn't mean he's a better player (certainly not a better defender - is this even debatable?) than Pau. Kevin Love has never even played in a playoff game. I respect his game and he's a good 3-point shooter but he's not the best PF in basketball.
He's had two off-seasons, but that doesn't discredit his whole body of work and ability (he's in his prime at 32). A lot of that wasn't his fault - he played out of position all of last season, Mike Brown is a horrible offensive coach, and he's the type of player that needs to be in a certain rhythm to be at his best. With Nash balancing the offense (and hopefully Dwight replacing Bynum's fatass in the paint) I fully expect Pau to be on his game again.
Kevin Love is the best PF in basketball, not sure why being on a bad Timberwolves team is being used against him. He's one of the best shooters in the league, the best rebounder, and he has a very good offensive game. Defense has never been a strong suit, but that's the case with many of the better PFs in the league. His production on the boards and the offensive end more than makes up for it. He's one of the best passing big men in the league, has a solid arsenal of low-post moves, and he consistently outworks the opposition for great interior rebounding position.
If he doesn't have the necessary personnel around him, there's no way that the T'Wolves would have any postseason success. Pau Gasol didn't win a single playoff game despite having a much better team than Kevin Love has ever had. Until two season's back, Love wasn't even getting big minutes on the team despite being the most productive player dating back to his rookie season. Once he did, he became the All-Star he is today, and the league's premier PF. The 2nd best player on that team was taken out by an ACL injury midway through last season which effectively ended any postseason hopes for them. Before Rubio's injury, they were well on their way to making the playoffs as a lower seeded team.
Pau Gasol was an elite power forward two years ago. Since then, he's regressed tremendously into a guy who prefers to shoot midrange jumpers instead of going to work in the post. I've seen him post up a man down low only to go to an awkward fadeaway jumper countless times over the last two years. Completely different from the Pau Gasol that would body up down low and score at will back in our championship runs. Individual defense was never stellar, but we could count on him to show up on the offensive end every night. His decline is not a result of Mike Brown's terrible offensive scheme, but his own lack of aggressiveness. He was great for us from '08-10 in the postseason, but he was equally as bad in the last two. Can't hang on to his previous play as a crutch when he clearly hasn't been the same postseason player for two years straight.
He's not an elite PF in the game anymore because he simply can't be relied upon to come through for us night in and night. He was that guy for us from '08-10, not anymore. If he can reclaim his form from back then, we'll be a juggernaut next season. The problem is that it ultimately comes down to Pau himself.