No response from Lyzko......no surprises there....
The reason why the Poles are the top of that list by Yad Vashem is actually very easy to explain.
Poland had the second largest Jewish population (after the US) in the world, prior to the World War 2. During the conflict, the Germans were sending a significant number of the Jews to occupied Poland, particularly as a consequence of the Operation Reinhard (which was about liquidating the ghettos in the occupied territories and sending the Jews to the death camps, all of which were established in occupied Poland).
That being said, it's no surprise that the Poles had the most opportunities to aid the Jews. But you can look at the issue from a bit different perspective if you want to turn that Righteous Among the Nations list into some kind of international competition.
The number of officially recognised Righteous of Polish descent is currently 7177 (according to the Wikipedia). The number of recognised Righteous of Dutch descent is 5910. If you look only on that, it may look like Poles are higher on the list and surpass the Dutch in their awesomeness. However, in 1939 there were around 3 250 000 of Jews living in Poland, compared to 140 000 Jews living in the Netherlands.
On the other hand, the Yad Vashem Institute doesn't include a lot of people who helped the Jews - it has specific criteria set when giving these awards, not to mention the fact that we'll never know about plenty of cases, and as time passes we're less likely to learn about someone's involvement in providing the aid. All of this reduces the actual number significantly, and people like Witold Pilecki, Stefan Rowecki, Stanisław Skrypij or the Ładoś group will not be on this list (despite their contribution).
As far as I understand the intent, mentioning the numbers provided by Yad Vashem may not be particularly helpful in proving the point.