All golfers are striving for more power. We see how far the pros hit and and we'd rather hit an 8-iron into the green than a 5-iron. I'm guessing tour pro Brian Harman on the right got some good power despite the short backswing? But, are we achieving power in the right way? A long backswing is usually less consistent and it can lead to deceleration through impact. Keep it short and you'll have an easier time of being consistent and, surprisingly, more power by creating more lag, more hip turn through, etc. Less is more - shorten the backswing and you can get more hip turn and power through.