Nintendo takes the top spot, with second place going to whoever you happen to like best.
Wedbush Morgan analyst Michael Pachter thinks that when it comes to first party console exclusives, the top dog is without a doubt Nintendo. He says that Nintendo stable of IPs is "vastly superior" to anything that Microsoft or Sony has to offer, and he doesn't think that - if they were honest - either company would really dispute that.
Pachter was responding to comments made by Microsoft's Dennis Durkin, where he said that in terms of quality and sales, Microsoft Games Studios - or just Microsoft Studios as it is now called - outperformed its competitors. According to Pachter, Durkin couldn't be 100% truthful on the matter because of who his employer is. "Dennis is a great guy," he said, "and is paid to be loyal to his Microsoft family."
When it came to who was better out of Sony or Microsoft however, Pachter dodged the question, saying that it didn't really matter. Both were about as good as each other, he said, so it really came down to personal preference. "I'm sure that there is a scientific way to determine who is better, but that's like arguing about whether Ford is better than GM or whether Wal-Mart is better than Target. They're both good, and people have different tastes."
It's inevitable that some people will disagree with Pachter; a phrase like "vastly superior" is too loaded and open to argument to be accepted universally. It is true however, that Nintendo has consistently found success with its first party titles, both commercially and critically, and this is undoubtedly informing Pachter's comments.
Source: Industry Gamers