ROTS GG and Jango vs. Durge and Montross

So something I've always wondered, say GG cut his head off, it lies there and he sticks his lightsaber(s) in his brain and disintegrate it, can Durge come back from that if his brain is killed? Or if this were on Mustafar, would that be the same as when Anakin sent him for a little ride?

Geez!!! This is a tough fight. Not that it would be a bloody fight but a tough one to call. I guess GG and Jango win. Jango would probably have a close fight with Montross but kill him(as he did before) and if GG did go into "Blender Mode", he would be able to take down Durge long enough for Jango to shoot off a few wrist rockets into Durge's body. I mean, if you completely obliterate Durge so that most of his body is disintegrated, he wouldn't be able to fully re-heal, causing him a slow death. Overall, General Grievous and Jango Fett win.

GG and Jango are better skilled, but Durge is not gong just or stand there, while GG is blendering him, he would do something, like move away, or hit GG, his strokes are very powerful, it would hurt GG.

And what if Jango just hung out in the air shooting him with wrist rockets, his back rocket and blaster shots? he can heal that quickly?

And what would Monntross be doing at that time, just watching, Montross is like 90% of Jango, Jango defeated him with great difficulty. it would take some time to defeat Montoss.