User blog comment:Veryverylongname/Top laners must read/@comment-11623843-20131006165624

"The first definetion of a top laners is someone who can defend and push back 2 players, either a duo team or a solo/ junlger gank combo."

As you said, this is the FIRST definition. The meta has changed since S1. It's still true that you shouldn't call for ganks, but your job as top isn't to simply survive 2v1.