@thc: No no no no. GRRM himself said that Ned is nothing more than above average as a swordsman while Jaime is legendary. Don't be fooled by that ridiculous fight on the tv show where Ned appeared to hold his own against Jaime, he would have been slaughtered if it were book versions. In the books they didn't want to kill Ned and just killed his men instead including Jory who was a fine warrior.
As for your comparisons, it's shown time and again that The Hound is superior to his brother with the sword.
Smiling Knight held his own against Arthur Freaking Dayne, he would murder stomp Gregor.
I agree with Dayne >> The Smiling Knight
Jaime isn't equal to Dayne, Barristan in his prime might be on Dayne's level if Daybe doesn't have Dawn but Jaime is a notch below these two. They are up in the top 4 all time with Daemon Blackfyre and Aemon the Dragonknight. Jaime is slightly below in a class with Cregan Stark.
Anyway, Hound beats Ned easily.