A source gave us this information and has been verified with a second source. We've been told that many GameStop locations weren't close to fulfilling their PS4 preorders due to a high allocation count. One store was cited to have initially 24 PS4's allocated for preorders, which then increased to 138 systems throughout the week. Currently that location has 66 preorders for the PS4. In contrast with the Xbox One, there's 12 preoders with an allocation of 18.
Last week, Andrew House, CEO of Sony Computer Entertainment, told The Wall Street Journal that "demand may outstrip supply," after Sony raised their internal sales projections for the next-gen console. Jack Tretton from Sony was told by GameStop executives that the chain would buy "every single unit" that Sony can produce if they could.