I have shot both, although not under the same temperature conditions, so I can't say how close the numbers actually are.
I shot between 150-155 with the Federal, and 105-110 with the Hevi-13.
It was significantly cooler when I shot the Hevi-13, so I know that had an impact on pellet count, just not sure how much.
Both patterns will kill, and both were very even. With the discontinuation of Federal, this will be my hunting load.