You need to understand Pakistan has been loosing series to Australia before that since late 1980s, infact Pakistan hasn't won a match against Australia till 2010 in England. So yes beating them albeit at home was landmark for Pakistan as its called changing history. Similarly for England, they were number one at that time and Pakistan was very low after the scandal, so it was one sweet win as well.
India has already been defeating Eng and Aus at home in the past, its not something new for them. Something new for them would be defeating them abroad. Similarly for now next challenge for Pak is to win outside Asia. Once Kohli achieves that feat then it would undoubtedly level him against the best of bests.
Yeah fair enough but considering how other teams are playing, its automatically qualifies india to be best. Though its nothing new. we always win in asia. New and special will be if we atleast do something special abroad.
But i dnt have much hopes considering our incompetency of taking 20 wickets abroad plus poor slip catching. Our spinners also become toothless tgere , athough our batting is always strong anywhere in the world.