Dear troll, I think you misread my username and TheoX =/= PurpleXS8.
Second of your argument is invalid: If you go on the street and ask random persons about both devices the chance of anybody giving an answer else then "I don't know both" is 10%. When your N900 was launched, the HTC Universal was doing so well, people were very happy to have a mini-laptop in their pockets running Linux. 99% of the devices running windows mobile could run Android.
Now to give you 2 mind blowing devices I've been researching about except this HTC Universal: HTC HD2 is the true hackers device. HTC HD2 was the only device so extensively hacked and opened that rignt now it could run the Windows 8 RT, Android, Ubuntu, Windows Phone, Windows Mobile and whatever else you can think of. The bootloader of this device had enough security breaches so that hackers can home-build their own custom bootloader intended for any possible OS.
Now the most opened device, even more open then N900 was made by HTC in 2008. It's called the HTC Shift, and it was the 1st smartphone natively running dual-boot. It came with Windows Mobile as the 1st OS and Windows Vista as the second OS, Intel x86 based CPU and 1GB of RAM. Due to the technology back then, the BIOS (not bootloader this time) could not be locked, so this phone can easily run ANYTHING you want WITHOUT ANY LIMITATIONS.
When replying please do a little more research in advance, or else you will just make a full of yourself. Second, anything that you point as fact and it's not based on real, solid arguments and facts is religion like and when I last read this section's description, religion was prohibited here. Before I wrote this thread, I owned a HTC Universal, I know what it's capable of and the true comparative between these 2 handhelds is: Nokia N900 >= HTC Universal.