Phillies were a bad team in April and May, the pitching was spotty, the hitting was MIA.
Things turned around when Ranger returned, then the addition of Sanchez, Lorenzen is the "cherry on top."
Once you can roll out a solid starter every game who can go 6+, you should win the majority of games.
And it bought time for the pen, SD working his way into game shape, Alvarado rehabbing, Brogdon going south could have crippled the pen, but better SP is reducing the load on the top relievers while they wait for reinforcements.
Now if Harper, Turner, Castellanos, JT and Schwarber hit at their career norms the rest of the way, with the emergence of Bohm and Stott, and Rojas/Pache in CF, Phillies have a top lineup.
But in the playoffs, it comes down to good pitching, if a pitcher has an off day, you can quickly fall into a hole.
So giving Wheeler, Nola and Ranger a lighter workload down the stretch increases the odds of an "October surprise."