Seems logical. After hours and hours of poker I find it easier to figure out my odds in all sorts of situations. The same concept could be applied to video games.
Maybe it isn't really the same concept. While playing poker, you usually take your time to calculate each move, but the reaction time is much, much less in video games (faster decisions).
That might be true if you're playing live or mainly for fun, but when you're playing 12 or more tables, poker starts to look a lot like those video games in terms of decision speeds. Throw in the need to remember how you've been playing on 12 different tables in addition to how 100 other players have been playing, and your attempt to trivialize poker playing looks somewhat silly.