There is no way on God's green earth that Garnett is still a top tier NBA player. Maybe top 15 today.
I know what he brings to the table that doesn't always show up on the scoresheet, but man is he unclutch, and you have got to be upset with his infatuation with outside shots considering his size. And it seems his worst shots come at the most inopportune moments of the game. That is why Pierce and Garnett balance eachother out. KG will fill a stats sheet in the 1st and 2nd quarters (usually) and help the team get off to a good start, while Pierce closes off games as really the only clutch option on the team.
Honestly, I know we should be proud of everyone's contribution after coming off a title bound year, but I think Garnett gets WAY too much credit for everything. It seems the people who only began following the Celtics last year tend to be the ones who insist KG's presence made the hands down difference in the vast improvement. It's easy to pick out one or two statistics and make that causal claim, but it's just not grounded in reality. The true reality is that Paul Pierce would have won titles if he had better supporting casts in his career.
To me, Pierce has hit top 5 plateau, when he's healthy and in shape. Truly the most underrated player in the NBA, and has been for a while. As for Allen, he's quite a bit farther down the list than KG and Pierce.
what was it you said you were smoking before you typed this Garnett commentary

?
you must be someone who knows very little about the game.
Kevin Garnett was plain & simple the difference between a Celtics team that didn't make the playoffs in '07 and won the title in '08. it was Garnett's attitude and leadership, along with his Hall of Fame defense and rebounding that produced the greatest turnaround in the history of the league. yes, Paul Pierce was great last year, but it was Garnett's presence that allowed Pierce to flourish like he did.
i was telling a friend last nite, while watching the C's vs Chicago, what a pleasure it is to watch the Celtics play the game of basketball as beautifully as they do......textbook man defense, rebounding, hustle and moving the ball on offense. much of that beauty flows from Garnett. be grateful for what we have again - a world championship team.