Hey,
Some great answers already. I just wanted to chime in real quick.
When you are trying to compare metrics between companies, make sure that you're comparing the same metrics. Often times people will look at the page specific metrics in OSE and then compare them to the root domain metrics in other services. This is inaccurate and isn't doing you any good.
The url in question has 2532 total links in OSE. I checked in in Majestic -who has a larger index because that's their primary function- and found that it had 3652 total links. So Majestic does have more because that's what they do.
If you aren't satisfied with the links in OSE, I would recommend combining our tools with a dedicated back link service since we will unfortunately miss links and/or leave low quality pages out of our indices.
Thanks!
Joel.