At my primary residence I use R610's. I removed two Pros and replaced with one R610. Apple to apple you will need two UniFi AP's to equal one Ruckus and something running their software if you want to do roaming. The cost delta then is very close if not cheaper going with Ruckus.
My vendor gave me a good price on the R750's for my vacation house because I was frustrated with fiddling with the UniFi Pros and my cloud key gen2 +.
Ruckus may be more up front, but, you will use less AP's and will need less POE cable drops, fewer ports, and power used on your switch.
The removed UniFi's will be repurposed at my other home that is a 2000 sf single level stick frame. It will be a perfect there.
Your comparison is the same as comparing C4 with Apple HomeKit. Not arguing here, just saying from personal experience.