Not really the same thing, SICP is about the practice of programming and the effects of abstraction. TAOCP is more like a recipe book of algorithms.

So the answer is, one needs both.

Or too much for anyone.

Now if the author is bummed by the "mathematics" of SICP he sure will have himself handled pretty roughly by TAoCP :)

disclaimer: I haven't read SICP but as others have pointed out I doubt there's any significant math in it. I presume the author was referring to a heavy dose of informal reasoning.