To answer my own question: The 2014 research of 40 countries actually shows that Americans estimate a relatively high inequality of CEO to unskilled worker pay

To answer my own question: The 2014 research of 40 countries actually shows that Americans estimate a relatively high inequality of CEO to unskilled worker pay (a ratio of 29.6 compared to an average estimate of 10.0). However, the actual pay ratio for American CEOs is much much higher than in any other country's (354 - as mentioned in the article. The next highest actual pay ratio is in Switzerland at 150 times while most countries have a ratio below 100). The research states: "American respondents (n = 1,581) in our data estimated the ratio of estimated incomes of CEOs to unskilled workers to be 29.6, demonstrating that Americans drastically underestimated the gap in actual incomes between CEOs and unskilled workers." So, yes there is a significance in the figures for America both in terms of estimated inequality and actual inequality that shows that American CEO pay is significantly less egalitarian than other countries and Americans in general significantly less aware of this than other countries.