Only 50 lucky ones recived ammounts above 100m. Will they really sell for a low price? I guess those ones, who want to, have already sold to buyers here in the forum. But youre right - the kind how the POW lite was distributed is a strength and weakness at the same time. I also expect a short drop in the beginning and good chance for a cheap entry. But afterwards POW with its unusual approach and broad user base has a extremely high potential. I guess the entry of Mcafee is showing that.
where do you check who are the largest holders?
Only mathematics

The first 50 people recived ammounts with more than 100m POW (10.000.000.000 / 2 x position). I dont think that someone had success with 2 accounts at this time, because it was very hard to reach the server. People from number 50 to 500 had between 100m and 10m POW. That means only these 500 people could really influence the price.
But the capitalization with the current named value is only 7 million. Thats a joke. Without any doubts a ten times higher evaluation would be imaginable - comparing to other currencies. With luck, phantasy and time also much more. If only a couple of investors share this opinion (and people as Mcafee will arange some public awareness), we will see goal 1 - 70m USD very quickly. But these are only my five satoshis.