It's just that a lot of players that play Starcraft: Brood War are also big winners in poker too. For example on Stars Rekrul, Nazgul18, Elky (Bertrand Grospellier from Team Pokerstars). A lot of them post on Liquidpoker. I'm one of that community of people that plays both NL hold'em and BW.

EDIT: I'll add Daut44 aka Bigballs aka Ryan Daut who just won the WPT caribbean thing for 1.5 million and is Green Plastic's new protegé to the list.