That is correct...
I didn't try it or the Yaesu because they're both in installations that don't allow for easy computer programming. You'll find that odd splits can be a PIA to program through the radio's face, so I just stuck to the two that I had with easy computer programming access.
It is a better brand. lol The feature that you're trying to reproduce isn't something that is sought after (to my knowledge), thus I doubt that manufacturers give it much thought when designing radios. While the guy in Hawaii found a practical use for it, I can't really think of a practical application where I would use it.
I think the price on the 920 that I saw from Wouxun.US was $329 and I got the Kenwood V71 for $369. No brainer... The 7900R is a single band 2M radio, so you'd want to compare the 920 to the Yaesu FT-8800R dual bander.
You'll find that there's a lot more to "quality" (going back to the "better radio" comment) than bells & whistles. A practical example is Moleculo and I working in the Angeles Forest on weekends. I carry a Wouxun HT and he carries either a Kenwood, Yaesu or Icom (he's a bit of an HT whore). My KGUV3D is constantly picking up noise (spurious emissions, etc...) that's forever got me playing with the squelch to quiet it. In that terrain, if I just turn the squelch up to keep the radio quite, there's a good chance I'm not going to hear the signals that I WANT to hear, so the squelch is up/down, up/down all day long. The front end on his HT's don't pick up the "junk", so I don't think he's ever fiddling with his squelch.
You mentioned being in O.C.. so here's an example that you can hear for yourself... We hang out on the 449.500 "Scrapper" machine which is up near Mt. Baldy. Plenty easy to hit from much of O.C. with a 5W HT. The users in O.C. on Wouxun and Baufeng HT's are constantly fighting noise from a tow company in Santa Ana that wipes out the repeater's audio. Kenwood, Icom & Yaesu HT's users never hear it because their receiver front ends are far superior to the Chinese HT's.
Food for thought. Don't get too hung up on bells & whistles (that you may not even use) when making a purchase decision...