Not EXACTLY clear on that explanation. "Way" is the driver count. As sound hound said, a 1-way is a woofer (not necessarily subwoofer)- it is just one driver. A 2-way is your standard modern speaker, which has a woofer- the main part of the speaker, which handles lows and mid-range- and a 2nd driver, a tweeter, which handles higher frequencies. A 3-way typically has a woofer (low end), a mid-range, and a tweeter (high end). 4-ways add either another tweeter or mid-range, and are pretty much overkill, ESPECIALLY in a Wrangler. Now, if you were doing up a sound quality competition vehicle, MAYBE a 4-way would be worth it, but still, unlikely.
Simply put, way is the driver count, not the crossover count. Just anal compulsive, and clarifying a bit
I highly recommend Infinity Reference speakers- for the price, there simply is no better speaker on the market. They're all I use in my own vehicles, and all I recommend for customers who want GOOD quality sound.