Two Sunfire Signature's wired together?

I currently have two Signature 600s in my system, which has balanced interconnects. I simply run one channel through each amp, without bi-wiring or bi-amping as described in the Sunfire manual. The speakers have only one set of binding posts. (I have separate subwoofers powered by their own amps.) My understanding is that this method uses all of the power of each amp for each channel, so I am wondering what additional benefit there would be to the wiring methods described in the Sunfire manual.

Has anyone compared the simple double-amp method described above to the specific monoblock instructions in the Sunfire manual? What were your results?

btw: As noted in another thread, using two 600s is far superior to two 300s.

Yes! Two Sig 600's, (mono bi-wire) Classic tube pre, Martin Logan requests. DYNAMICS redefined! I added two vintage Magnepan MG 1b's to the remaining current outputs for kicks. Holy crap. Then added a vintage dbx 3bx ds, with all power connections to Tice Power Block/Titan units. This audio gig is a blast.

I have two sig 2s 600 vertically biwired to my legacy focus 20/20s along with a legacy Goliath subwoofer with a built in 2000 watt amp my preamp is a paradigm p3. The sub is ran thru a xillica active crossover that came with the sub and I gotta say it’s just musical bliss at my house. I wanna talk about it all day. I streamed a Black Sabbath concert live at radio city music hall and it was like sitting in the crowd the snare drum was just giant and bass guitar would tickle my chest and constant goose bumps all over my body awesome to say the least if you can have the means to get two of them do it. Because that will be the best money you ever spent.