Opening huge file, comparison Editor: Vim, Emacs, Sublime-Text ...

Sometime we mistake open a huge file because we forgot the size of dump database or open wrong file. It take huge time and computer hang on. But Emacs seem no problem.
I have tried many editor and Emacs seem open all not only size but whatever file extension like pdf or  zip...
I am too lazy to re-test these editor and provide evident.