So, I just got porter today. I’ve used him in multiple games today, and yes, the coverage/knockout thing is extremely good. However, he is a liability when it comes to press coverage. There wasn’t a single time when I was in press man coverage that he was not getting beat off the line. I suggest using him if you have a defensive strategy card that helps with Press Coverage (PRS).
edit - he’s still bad in man but better in zone, there are better CBs available so if you don’t want to grind for a decent CB don’t do it. Youre not missing out