There are some instances of Haskell outperforming C/C++, but this is generally limited to situations where unboxing, strict application and Haskell's type syste

There are some instances of Haskell outperforming C/C++, but this is generally limited to situations where unboxing, strict application and Haskell's type system allow GHC to perform some amazing optimization. In other words, don't expect Haskell to outperform C/C++ in realistic circumstances.