Ray Allen and KG both "fell off" too. Are they human, or just doing what it takes to help the team. It will be normal and expected his numbers to drop. I don't understand whats wrong with that.
In KG's finals season in Minnesota his per-36 minute stats were 20.5 points, 11.7 rebounds, 3.8 assists, 1.1 steals, 1.5 blocks, 47.6% FG and 83.5% FT.
In his first season in Boston (2008) his per-36 minute stats were 20.7 points, 10.1 rebounds, 3.8 assists, 1.5 steals, 1.4 blocks, 54% FG and 80.1% FT.
Where is that dramatic drop-off? There was none. KG's minutes dropped from 39.4 MPG in Minnesota to 32.8 MPG in Boston...that's the only reason why his overall stats dropped. He was every bit as productive as a #2 or #3 option in Boston as he was as a #1 option in Minnesota. This to me is a clear indication of an elite basketball star, because it proves he will get his production no matter what the scenario - even when he isn't the central focus of the offense.
He did experience some drop-off in his second season in Boston, but he was also 32 years old at that point in time...about where you expect any NBA player to start dropping off a little.
In Chris Bosh's case his playing time didn't drop off at all. He played 36.1 MPG in Toronto (2009-10) and 36.3 MPG in Miami (2010-11). His final season in Toronto his per-36 minute stats were 23.9 points, 10.8 rebounds, 2.4 assists, 0.6 steals, 1.0 blocks, 51.8% FG and 79.7% FT.
In his first season with Miami Bosh's per-36 stats were 18.5 points, 8.3 rebounds, 1.9 assists, 0.8 steals, 0.6 blocks,49.6% FG and 81.5% FT.
With the exception of steals and free throw percentage, his numbers dropped off significantly across the board despite the fact that his playing time. This to me indicates one of two things:
1) Bosh was a "good player on a bad team" type guy. He was undoubtedly an excellent player, but his statistical production was exaggerated by the fact that he was playing on a bad team, and so everything went through him. As soon as he joined a team where he was no longer the #1 option, his number came back down to earth.
OR
2) LeBron was so obsessive about making everything work for him, that other players on his team needed to play outside of their comfort zone in order to tailor to his special needs.
OR
3) Both of the above
I see Kevin Love as another guy in the Chris Bosh scenario. I don't believe Love is an elite talent, not by any means. I believe he is a very good talent, and a legit All-Star...but I don't think he is superstar material. I think he's an All-Star player who was made to LOOK like a superstar because he played on a terrible team where everything went through him, and hence all of his statistical numbers have been highly elevated.
I also think that with Lebron needing his space to drive, Kevin Love is going to be mostly limited to becoming a pure stretch 4 - doing little more than standing at the three point line and chucking up bricks at his standard 35%-36% rate. Pulling him out away from the basket will also reduce his rebounding, as will the fact that he's now playing with Andersen Varejao, who is a very good rebounder (whereas he was pretty much the lone elite rebounder in Minny).
I think Kevin Love as a player will be very much brought down earth in Cleveland. When you're putting up 26/13 people tend to ignore your other deficiencies, such as your fairly average inside game and the fact that you are a major liability on defence.
Once his numbers are down to a (more human) 18/9 with a lower FG% (due to less touches inside) suddenly his production is no longer going to be impressive enough to offset his lack of athleticism and 'open door policy' defence.
Note that Kyrie Irving and Dion Waiters are not exceptional defensive player, and Varejao also is not the defender he once was. Lebron James is really the only noteworthy defensive talent in that starting five. Kevin Love's defensive limitations are going to be emphasised more than ever because now, in Cleveland, all eyes will be on him. That Cavs team is going to be defensively horrendous. Honestly, even Miami have been pretty poor defensively the last couple of seasons, and they have more defensive talent then the Cavs do right now.
This situation is not a great one for Love. He may or not get a ring. If he does get a ring, he'll be known as the guy who rode the coattails of Lebron and cheated his way to a ring because lets be honest - he couldn't even lead the Timberwolves to a single playoff appearance, so everybody knows that the Cavs winning a Ring isn't from his influence. If he doesn't get a ring, he will be mocked as the guy who never led his team to the playoffs...and then could never win a ring, even WITH Lebron. For Love, any chance of him every getting respect is pretty much out the door.
Unless he continues to put up the same numbers in Cleveland, and improves his defence (to be at least tolerable), and they win a Ring. Then maybe he'll get at least a small amount of credit. Though probably not.