I just really don't see the point in comparing only one aspect of their games. One back evades tacklers by being quicker, faster, with finess. (as you put it) The other runs them over and takes more hits. Also, I just don't see how the fact that LT DOESN'T NEED TO run anyone over makes Gore better at breaking tackles. I'm sure if LT was as slow and short as Gore, he would use what he had to his advantage, much like Gore does. But really, each player has their own style, and the only way to compare two different styles of play is by counting the TD's to see whose style really is "working". And we all know who wins.
Of course there are other factors that come into this, like O-Line, full back, QB, Defense, and everything else. LT is still much better, even though he DOES have a better surrounding cast.