and this is not true also. Edus are the same as infos. Their values are very high only because such domains are usually highly trusted sites. If some university had info domain it would be of the same value.
There is one small difference but I doubt it effect search engines. If the title of the page is the same as the domain name it might be sorted differently depending on the domain. For example: GetAFreelancer.com or GetAFreelancer dot com would be above: GetAFreelancer.info or GetAFreelancer dot info Besides this people who don't remember a domain completely normally tries the dot com alternative first.
One more thing came to my mind. If the domain contain a keyword it might also effect the rankings. For example if you search for: programmer .net It seems to me that the .net domain would be above the .com domain if everything else was the same.
personally I like .info domains if they are simple. I think currently they are underpriced. For example I don't understand why similar .org domains are more preferable than .info For example cars.info - definitely says that there will be all possible information about cars and you will be offered to purchase cars. But cars.org - it can be any organization but definitely not selling cars. So .org names are not good for commercial sites while infos are good. IMHO
The main reason is that most spam sites are in .info. But on the other hand, it really depends on how well you market the site.
I've heard the "all TLD's rank the same" argument many times, yet I've never seen a .info ever get #1 SERP, or even anywhere near it.