I don't think anyone is arguing the capabilities of the Yamaha, but what I think is attractive to some people about the Presonus is that it has 24 mic/line inputs right out of the box...without the need to carry around/hook up additional preamps. Sure you can get some sort of flight case to hold the Yamaha and a few ADA8000's, but now you have a larger and heavier case than what the Presonus would be in.
I've used this console a couple times. I miss having motorized faders and recallable head amps, but it wasn't enough to make me say, "What a piece of crap." It worked flawlessly thru the gigs, sounded good, and I was able to do just about everything it would do without cracking open the manual.