Let me clarify here. Be "max", most of these guys are referring to playing it on very high resolutions, with all settings on max. The 5770 can "max" nearly any current game, but you might have to settle for "only" 1080p as your resolution on the harder ones. It's definitely a gaming card.
This is Crysis Warhead on a 5770 at 1920x1080, all settings maxed, no AA:
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And Bad Company 2, also at 1080p:
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