I think what you're seeing is due to the monitor resolution. Your third picture looks great because of a somewhat legacy (and deprecating as we speak) technology called
sub-pixel rendering. As device resolutions scale up, sub-pixel rendering becomes less useful, especially given the complexity of implementation. Sub-pixel rendering is really nice for low resolution displays. It results in the colored text, when zoomed:
Antialiasing is a bit different in that it uses full pixel partial opacity instead of color-channel-specific opacity, resulting in things that look like this:
On lower resolution displays, subpixel rendering is superior - on higher resolution displays, antialiasing is perfectly fine and has many benefits, which I won't get into here. HOOPS provides us with antialiasing, so we use antialiasing.
Long story short - at some point the ability to disable antialiasing entirely should exist, and for those on lower res monitors that will give the appearance of the "crispness" - especially for things like thin text that may be only 1 pixel wide on your monitor - but those on higher res displays will definitely want to enable antialiasing.