TheOptimizationIdiot - 8:23 pm on Mar 9, 2013 (gmt 0)
If I understand you correctly, it should be 10 times easier (to go from #4 to #1) based solely on the number of ranking positions increased?
Well, not necessarily easier, because it's usually not but "less change" required.
So, using your example and what I've done in the past:
To go from page 5 to page 2 I would make a "larger change" like say rewording a few sentences through out the paragraphs on a page or even the paragraphs on a page to be more inclusive or concise or something along those lines.
To go from position 4 to position 1 I would change one word at a time.
It's not always [almost ever] as easy to find "the word" to change and what to change it to as it is to reword the text to be more concise or inclusive, so I would definitely not say it's "easier" to go from position 4 to position 1, what I would say is it's much more detailed.