I play on PC and I've seen my friends play it on PS4. I can tell you the difference is huge, whether it's Ultimate or Season.

As you said yourself, it was pretty easy to find in ps4. Having been experiencing that, you will be in for a disappointment. The smaller the population, the harder it is to find a smooth non-lagging game too. You might find yourself constantly battling a network lag every 4 or 5 games.

And way less people is accurate. For instance on Seasons, there would be about 2k gamers at a time. I'm sure you can tell me how much more is on ps?

Don't get me wrong, you will enjoy the game all the same, but prepare mentally for all these downsides.