Image credit: https://www.flickr.com/photos/kardsunlimited/4635116055
Both Steve Urkel and Screech Powers are iconic nerdy characters introduced to us in the late 80's and went well into the 90's (don't forget Saved by the Bell the New Class 1993-2000). There are a bunch of parallels between them, so I thought it would be fun to dig up the similarities and see how they stacked up against each other.
Laura Winslow aka "My Pet"
Both Screech and Urkel had an equally undying love for their ladies. So judging by their dedication to them, it would be a tie. Lisa and Laura were both equally repelled by the idea having any kind of romantic relationship with their nerd-friend. However, I think later on in Family Matters, the dynamic between them changes to a romantic one, so Steve gets the edge here.
If we get into who had the best crush... Laura always had a chip on her shoulder, an abrasiveness that somehow made you feel really bad for Steve. Lisa on the other hand was always cool and collected and had a great fashion sense. I don't know what Laura was thinking half the time with what she was wearing. If I reclude for a moment into the recesses of my adolescent mind, I am going to say Lisa was overall more appealing than Laura, thus giving Screech the edge, even though he was never successful in wooing her.