Yeah, so with the recent chapter of One Piece, we get a flashback image of a younger Shanks and Buggy, back when they were on Gol D. Roger's crew. I'm sure people noticed that Shanks was holding his sword with only his LEFT hand in the flashback. Soooo, wouldn't this imply that Red Hair was originally a left handed fighter and could have been stronger before the luffy/sea king incident? I ask this because a lot of people out there believe that Shanks is just as strong if not stronger than the time before he met Luffy.
On another note, if Shanks was able to duel with Whitebeard and come out of it relatively unscaved, wouldn't that make him an equal to Gol D. Roger? I mean, they probably didn't have a serious fight, but a duel's a duel. Kinda makes me appreciate the pirate king less.