Yes, considering the amount of tickets the user had, it isn't really surprising. Hopefully he didn't buy all the tickets since the lottery amount won is less than the total value of the tickets.
I wanted to check if he has a lot of referrals, but on the stats page everything is linked to a part of the BTC adress and not to the user ID. The guy just has a lot of luck for finishing 2 weeks in a row at the third place, even though he has quite a lot of tickets.
He/she is an active gambler because he also won 5x in a row daily jackpot so it's not strange if he/she has lots of lottery tickets (can check it at daily jackpot winner), I mean by his activeness as a player allows him to collect lottery tickets and also from the reff he has or maybe he bought it, but it's all really luck to be able to win the lottery 2x in a row.