Even with a favorable location, the online dating market favors women. When I was in Mexico, it took about 200-300 matches, which became 40-60 active online chats, which became 12-18 in-person dates, to find the woman who became my wife. So about a 6% match to date ratio.
As pointed out in the comments to the linked article, this guy did well because he was in New York, which favors men. Technology hot spots (Silicon Valley, Seattle, etc.) tend to favor women. Places that favor Caucasian men include Latin America (Peru being a really good place; Columbia and Mexico also are favorable), Thailand, the Philippines, Eastern Europe, the Dominican Republic, and large parts of Africa. In the US, the deep South (Alabama, Georgia, etc.) are somewhat better for successful men.
With places where the ratios favor the women, it takes about 100 messages to get a date (and a lot of you’re too short/too old/etc. canned rejections); to date requires I just send the same spam message over and over (“let’s meet for coffee!”) until someone says yes. The hit ratio is just too low for me to get dating success with anything besides spamming.