Apple GCD vs Intel TBB, any big difference on macOS?

I’ve just been looking at various build options for OpenCV. For Apple macOS, is there any point building with TBB (Threading Building Blocks), or is OpenCV’s support for GCD (Grand Central Dispatch) basically interchangeable / as good?

One less additional dependency (TBB) would simplify my app, but if there’s a big win by having it then ok.

Thanks.