Knowyourcell had some hands on with the N8 and took a snap with other popular smartphones, the new Nokia E73, the HTC EVO 4G and the iPhone 3GS.
Look at the photo below, the EVO is positively HUUUGE. I must say, that 4.3″ would make some nice video viewing and web browsing.
As the N8 is targeting more mass market, the 3.5″ screen is the sweet spot at the moment for big screen yet still pocketable.
Perhaps the N8 would look even more streamlined with a darker colour (black/dark grey perhaps) and not this striking green.
Alternatively checkout a specs comparison of the N8 versus some smartphone elites, iPhone 4, EVO, and Pre