Stock price when the opinion was issued
ZDI uses the MSCI World Universe International Developed Markets index, which does not include exposure to South Korea. VIDY uses the FTSE series, which does include South Korea. That's the main difference, along with a slight difference in MER (ZDI slightly more expensive).
Focus on the exposure, not the MER. You have to make a call whether there are enough good dividend-paying stocks in South Korea to want to choose VIDY. Remember, these dividends don't get preferential tax treatment, it's all income. So if you're looking for income in your taxable portfolio, you get a much better tax experience with capital gains from the covered call overlay.
An international dividend, which means it is going to come into your hands as income and will be taxable. He tends to avoid this type of situation. A lot of it is basically EAFE. You have a lot of Europe and you also have some Japan, Far East and some Australian.