What are we talking about? The calculations are different in our case. India - Side that bats first is bowled out. Side batting second - Bangladesh - wins.
Team A bat first and are skittled out for xxx off 49.3 overs. Team B reach the target for the loss of xxx wickets off 40.5 overs, scoring a single to win the game and end with xxx runs.
Despite Team India's runrate for the balls they faced being because they were bowled out the entire 50 overs are added to their total overs faced tally for the tournament, and Team B are credited with having bowled 50 overs.
Team B actually scored at a slower pace, however they managed to protect their wickets. Thus, only the xxx overs are added to the seasonal tally.
Let's not be carried away by net run rate. It is misleading and the media has not understood the explanations provided