When you say the same as Sense 5, does that include Zoe and the camera features? What would be the benefits of flashing Android Revolution HD vs waiting for the official update from HTC? I am looking at potentially rooting and using a custom ROM for the first time, but not sure if it would be worth it on the One or not. At least currently.
Edit: I purchased my One unlocked from Amazon, so there is no AT&T bloatware.
Yes, Zoe is a Sense camera feature. The benefits are different for everyone, for me it would be to have the latest version of JellyBean available (4.2.2) with all the latest features and improvements without having to wait for the official OTA update. I must say that ARHD is less-bloated and seems to have a better battery life than the stock OTA 4.2.2, but that was just my experience and it could be different for others.
If you're still stock, I'd say just wait for the OTA update because it will come to you sooner than later and because going back to stock in order to get the 4.2.2 OTA can be a bit of a hassle if you don't know what you're doing. I have posted a guide above for unlocking bootloader, rooting and such. Be aware that unlocking the bootloader (which is required in order to install custom recovery and therefore root/custom ROMs) wipes your virtual SD card, meaning you'll most likely end up with the device just as you bought it from the factory, empty.
I prefer to root because there are some applications that I need that require root privileges, like Titanium Backup, Greenify and several others which I cannot recall at the moment. Here is a nice list of popular applications that require rooting:
Top 15 Apps To Install After Rooting Your Android Device
It's probably outdated since it's in 2011 but it'll give you an idea