I have actually fired a Winchester 1911. I don't know why, but it has (or seems to have) a lot more recoil than the Browning. It has a heavy buffer that I have been told breaks and is now unobtainable.
The reason for the knurling on the Winchester barrel is very simple: Browning's patents covered the idea of a cocking handle. The really ironic point is that Browning first offered the A5 to Winchester, which had purchased so many of his other designs. But he had figured out that he had a real winner and wanted royalties (so much per gun) rather than just selling the rights, as he had done in the past. Winchester refused, so Browning took the design to Remington. Unfortunately, the president of that company had died unexpectedly and no one was in a position to deal with Browning. So he took the idea to FN, with which he had worked earlier.
But before Browning and Winchester parted company, Winchester's patent attorneys, assisted by one Thomas Crossly Johnson, a company designer, had drawn up the patents for the auto-loading shotgun. So when The company wanted an auto-loader to compete with the A5, it was poor "Tommy" Johnson who was handed the task of figuring out ways to get around his own paperwork! Talk about regrets!
Jim