He is a similar player as Wes Welker and Julian Edelman.
Edelman had a career catch percentage of 65.9% and Welker was 70.8....with Brady throwing to him. Shakir is currently at 82.5%....94.7% this year.
Not to mention is short area burst is much, much better than Edelman and Welker. He's the definition of making guys miss in a phone booth.
The one slot WR who gets mentioned as the best is St. Brown on the Lions and he's at 74%. And has a lower Y/R by 3 yards.