Sounds like they made the average of this one something other than 100.
Which means you can not compare this to the standard scale.
Now, before something tells me that this forum is just exceptionally intelligent - I doubt it's a 1.5 multiplier
The average score of every test that was ever taken on that site is 108. This should not be surprising, most people who do this sort of thing are people who already believe they are more intelligent than average (and they are). But the test does follow the proper scale.