The following images show the results of the various pipe sizing methods.
Friction and Velocity

Before Sizing

After Sizing
Friction Only

Before Sizing

After Sizing
Friction and Velocity - Larger Branch

Before Sizing

After Sizing
Friction and Velocity - Match Connector Size

Before Sizing

After Sizing
Velocity Only

Before Sizing

After Sizing
System Inspector

Single Pipe

Flow Diagram