Ok - good callout. What I meant as a first comparison of "skill range" is referring to tennis skill. In tennis, players can usually have good, fairly competitive play with others that are 0.5 rating above or below them. Any more than that and the skill/style difference doesn't really work. On the other hand with PB, in my experience I should note, we have strong 4.5 tennis players that can easily have very good fun playing Pickleball again 3.5 tennis players. Again, this is not about tournament PB, but about good, fun, even intense Pickleball.
Similarly, and maybe an even more important/inclusive example....: I can play a game of pickleball with my kids, my wife, people that really don't already play tennis. The initial learning curve is much lower for PB to do at least the basics. The ball doesn't go flying (like in tennis); there's much less court to cover (compared to tennis). I find the people that try Pickleball for the first time sort of immediately feel like "I can do this!". Whereas with tennis, first-timers (namely adults) often feel intimidated and like "well, that's not gonna happen for me".
Hope this helps anyone who is still considering giving PB a try.