Both displays are at par, Super LCD is just a gimmick that samsung came up with b'coz AMOLED's are in really short supplies. And for the 1 GHz CPU, well the 2.2 firmware for Moto Defy is coming latest by May to India (confirmed with Motorola, it has already been released in China). The Firmware will clock the CPU to 1 Ghz (because officially there is nothing called a OMAP 3610, 800 MHz CPU (it is the OMAP 3630, 1000 MHz chip downclocked to 800 MHz)...
Build Quality wise, Defy is much better built than the Samsung Sibling, and i9003 has no flash for the camera...4" screen but the i9003 neither has the style of the Desire HD nor the sexiness of the Xperia X10, for a 3.7" Defy is petite and looks good.. What Samsung does trump the Defy with is the Android 2.2 out of the box... For that Defy has to wait, though the 2.2 Firmware roll out is in Q2 2011..
If you need something sturdy and can live without Froyo, go for the Defy, it is equal to the i9003 in almost all aspects... If 720p recording, Video calling and Froyo is something you can't live without the choice is obvious isn't it...!
my 2 cents...