Most all HTC phones suck in direct sunlight. I know the Galaxy S was better than my buddies Thunderbolt on low settings while mine (Mytouch 4G) and his were cranked to make it viewable.
This looks as it is a beast of a phone. May be the next phone I get, unless something else better comes along before March.
Posted from my CrackBerry at wapforums.crackberry.com