I think we sometimes forget that breaking tackles is an art form. I include myself in this of course.
Changing angles, using the strong part of our body to put the defender at a disadvantage, and unexpected movements ...
I remember Roger Craig when I was still a kid brought his knees up so high that it would rip through arms (and legs in super bowls) ...
I love the way he breaks tackles. I can't think of too many others at the position who move through contact like he does.
Like ... he shifts a little to put the defender at a disadvantage and then attacks the disadvantage.