I put more weight on a player having the technique and mental toughness to score runs at the highest levels rather than whether they are a considered a specialist in a particular format. The best batsmen will score runs whatever the format.
England showed good resilience to win the test. Having been put in on another sporting wicket and having lost early wickets and with the series gone, it would have been easy to fold in the manner of some of the recent tours to Australia, but they stuck together as a group. If only we could find a top 3, this would be a very decent side with the options available