There is still chance to get good, for example, I see PS4 players in War Thunder staying on par with pc players.
Hell, once I met one that was so good we needed four planes to actually take him down!
Planetside 2 is also cross-platform, and I found myself better on PS4 than I was on PC.
With these examples I mean that GoIO on PS4 may be not be like you described it:
It's like throwing a goat into the middle of four cages. One has lions, two has T-rexes, three has mecha sharks with lasers, and four is Pauly Shore. Then you open the cages and...I'm sorry it's just too graphic to even describe...
Also, CoD is known for being home of these hyperactive-hyperactive players with aimbot-level eyes.
And, unlike CoD, GoIO has a high learning curve, where only the people wilful to reach high levels get (or
should get, all hail the matchmaker) to fight with our wonderful, hyper-experienced, slightly-insane, sometimes-salty, veterans.