There is big difference between equal PT and not playing the bench.
With the exception of playoff games, I'd say most teams play starters 80% of time and backups 20-30%. Usually starters play first 10 minutes of game and last 10 minutes of game if competitive and the backups get PT in the minutes in between. Goalies typically split time except for playoff games.
That usually works and keeps most folks happy. Exceptions are often made in playoff games or in the last pool play game if a win is needed to advance to playoffs. | 
