Generally, yes, but not the more exotic Cantonese food -- that's particularly true of seafood. And I agree that "Chinese American" qualifies as a cuisine -- it's just not a cuisine you'd ever find in China.

One other point: even authentically-prepared Chinese food in the US will taste slightly different than the real thing in China (where it's just called "food" ). This is because of differences in available ingredients and, also, in methods of food handling and storage. Though Chinese methods are completely healthy (after all, they've been perfected over many thousands of years), not all of them comply with US health code requirements.

And one final note: When my wife first came here, she both amused and mystified that many, if not most, American Jews consider Chinese food a "traditional" celebratory Jewish meal. She understood why when I explained that, on major Christian holidays when most other restaurants are closed, Chinese restaurants were usually open for business.