You know that Nuke's had matchgrade tools for years now right? Pre-dating FCPX. This is an upgrade to those match grade tools, and from experience, they're far superior to FCPX's offering.
Also, I'd imagine that FCPX is probably the absolute last point of inspiration for The Foundry when looking at implementing features into Nuke. For one, they're 2 completely different tools for 2 completely different tasks - non linear editing/story telling vs single shot digital compositing.
I'm not starting a flame war, just thought I should put forward the facts re-Nuke's colour tools. And on that note, Nuke 8 is an incredible update. I've been using the beta at work for a while now, and it's packed with so many new features, along with tons of enhancements to current tools. It's one of their most impressive updates to date imho. And on top of everything? It's rock solid.
I'm hoping FCPX 10.1 will be as impressive. Albeit in different areas. I think we've all got high hopes. And I've got a feeling it's a going to be a biggy...