The lenses on both versions are still clear so it's not the lens that's smoked. It's just the inside bezel that surrounds the headlight that's "smoked" or more of a black chrome.
So here's the regular ones like you have on your truck:
https://m.media-amazon.com/images/I/...SR500,500_.jpg
Here's what the Sport model looks like:
https://cdn.1aauto.com/partimage/LHP...7eee46_490.jpg
Same outside lens and same light output. It was just a cosmetic upgrade available on these trucks. They look a little more sophisticated or some shit.
Those pics don't do the difference much justice but the smoked ones look much better installed on the truck.