Fitz is going to blow past all of Anquan's career numbers when all is said and done. I doubt Boldin makes it past his early 30s with all the hits he takes.
We shall see. He obviously wont be able to play the same physical in your face game by the time hes 32 or so. But by then he wont need to. He will play like many older WR's who are still successful ala Cris Carter. Not fast or over powering. Just crafty and great route runner with great hands. I will be surprised if Fitz is able to surpass Boldins #s for any other reason other than age. Fitz had the luxury of coming into the NFL after his sophmore year.