Nasser should've had a better back if he wanted the Sandow so bad.
Ramy didn't have enough thigh separation or back detail to win on Saturday.
I also think back thickness is an issue with Big Ramy. If those things are improved upon, or if even Phil Heath comes in a little off, I think the door can be opened for Big Ramy.
Another thing to consider: Phil Heath began bodybuilding in 2002, right around his 23rd birthday. He currently has around 15 years of training under his belt [and told me he would take improvement shots each week, which was later going to release, but I'm not sure if he ever did].
Big Ramy started training in 2010 I believe, as he hit the scene in 2012, and I recall hearing that he had only been training for two years at the time. That would mean that Big Ramy started training at age 26. So Big Ramy only has seven years of training experience. Meaning that Phil has about 7-8 years more training experience than Big Ramy.
There will be a period of time - even if it is in five years - that Big Ramy will no longer need to worry about Phil. That is, assuming that no one else rises up to Ramy's level, and that Ramy is still alive.

I hate to say it, but with an off-season weight of something like 338-lb, it's hard to say how long a human being can sustain that.
Likewise, Phil Heath mentioned Dexter on Olympia night in terms of longevity, but Dexter has never take bodybuilding to the same level that Phil did, so I think Phil will burnout earlier. At the same time - and my last point, for real

- Phil Heath has only competed in 12 contests this decade.

I think the lack of competing is the reason why Phil is still able to show up so crisp and shredded and 3D. It's one thing to compete in the contests near the Olympia, but peaking multiple times in the year is another matter.
Consider that only twice this decade Phil has peaked twice during the year - once in 2010, and once in 2013 - both for the Arnold Classic, where he placed 2nd in 2010, and 1st in 2013.