Probably they're using the Intel MKL library for their linear algebra (which is severely gimped on AMD - SIMD is disabled and only the scalar fallback code runs).
If they've wrote SIMD code themselves then the gap between the two shouldn't be big (AMD's are actually better for SIMD nowadays, since the recent models support the AVX-512 instruction set while Intel ended support for that due to the P/E core split fiasco.)
If they've wrote SIMD code themselves then the gap between the two shouldn't be big (AMD's are actually better for SIMD nowadays, since the recent models support the AVX-512 instruction set while Intel ended support for that due to the P/E core split fiasco.)