Chatty analyst believes the has outsold the in North America for the month of May. Some prediction had put the PS3 in the lead, previously.

"We estimate sell-through of 750,000 Wii, 250,000 360 and 225,000 PS3 consoles. For purposes of comparison, The simExchange prediction market forecasts 744,000 Wii, 216,000 Xbox 360 and 228,000 PS3 consoles sold, while VGChartz forecasts 645,327 Wii, 191,992 Xbox 360 and 177,989 PS3 consoles sold," he revealed.

"Our console sell-through forecasts reflect our belief that supplies for were steady this month, and our belief that Xbox 360 and PS3 hardware grew early in the month due to higher attach rates to IV."

NPD Group will unveil their official May numbers later this week.

By Luke Guttridge