It is Gorilla vs Shark because it's too broadly scoped, which is one of the items touched on in the original blog post.
If we examine the original question again:
Would a T-800 or T-1000 be able to carry or pull more weight than an adult elephant?
Some of the things that are wrong with this question include:
An elephant has greater surface area than a Terminator. Greater surface area can support more weight. But all of the weight can be focused in a single point which renders that irrelevant. Which case is being asked about here? We don't know.
An elephant pulls with its trunk, a Terminator may pull with its hands, its teeth or other parts of its anatomy. Either may pull a weight via ropes wrapped around its body.
A Terminator has greater manual dexterity which would enable it to manipulate objects into better positions for carrying or pulling that an Elephant may not be able to.
An elephant has all four feet on the ground which may give it better leverage than a Terminator in certain circumstances.
This clearly falls under "What, specifically, is wrong with asking Gorilla vs. Shark?" reason 2:
Without any kind of scope, every answer can make any assumptions they like — and there will assuredly be hundreds, all different.
And the hypothetical "Google+ vs Facebook" scenario:
But it still utterly fails to set any scope or terms, and is thus virtually impossible to reasonably answer.
Reading similar questions, and the debates attached to them, that have previously appeared on this site, I get the feeling that a common interpretation of "Gorilla vs Shark" is something along the lines of:
Who is more evil: Judge Death or the Witch-king of Angmar?
That is definite "Gorilla vs Shark" but what the blog post should make clear is that the definition is both broader and more subtle than that. In particular the four hypothetical scenarios that close the blog post are a more useful guideline, and those scenarios should be making it clear to us all that "Gorilla vs Shark" is not a problem of subjectivity vs objectivity; it's a problem of scope.
To reword these scenarios in terms of this question:
- Scenario #1: Is a Terminator stronger than an elephant?
- Scenario #2: What is it about Terminators that make them stronger than elephants?
- Scenario #3: What is the single aspect of elephants most responsible for their superior strength to Terminators?
- Scenario #4: Are Terminators better at pulling trucks with their hands than elephants are with their trunks?
The question as it stands has the following features:
- It falls under scenario #1 (I'd hope that's obvious), and:
- It can't be edited to improve without changing the asker's intent.
Whether or not it's Primarily Opinion-Based is completely irrelevant here (on reflection I'd close as "unclear" or "too broad"). As Richard's answer shows, it's actually not POB given the right circumstances, but that's the problem: Richards answer is one of those answers that "can make any assumptions they like", one of the "hundreds, all different".