Ok here's proof of why Goku has no chance of putting down Darshu.
In regards to the infinity atoms it says:
page 9 of Bastard!! vol 20:
"In a fight between human beings, to kill one's opponent means destroying his physical body. However, for creatures like angels and demons with powerful regenerative powers (atomic reconstitution, spatio-temporal regeneration), killing the enemy isn't simply a matter of physically destroying the material body. The complete annihilation of its true form, astral body (spirit) and ethereal body (soul) is needed."
page 10:
"It's composed of the core of the body, spirit and soul. This eternal atom is the core of every existence, their nucleus"
Scans
Pg 9
http://i41.photobucket.com/albums/e254/hitokiri7303/Bastard20_008.jpg
Pg 10
http://i41.photobucket.com/albums/e254/hitokiri7303/Bastard20_009.jpg
As you can see in order to destroy Dark Schneider Goku needs to have the ability to destroy him on the different planes of existence, the physical, the astral, and the soul. We have clear proof from the DBZ manga and anime that no Ki attacks destroy the soul as we often see Goku's soul moving around in the spirit realm after he is killed by ki attacks and this is an integral portion of both anime and manga storylines.
Therefore in conclusion Dark Schneider wins an easy victory for these reasons:
1) He moves at faster than light speeds, while Phenomenol has failed to provide any evidence that Goku is anywhere near that.
2) He can take attacks from planent busting opponents easily and even if Goku can get though 10 maybe even twenty of his outside shields D.S. has thousands of them and is constantly regenerating them.
3) D.S. has attacks that match the power of someone who was confirmed as galaxy buster level by multiple reliable sources.
4) In order to permanently take out D.S. and overcome his regeneration he needs to be attacked on three seperate plains of existence, two of which it is highly doubtful that Goku could do anything to. In short D.S.'s possesses the most powerful regeneration ability I've ever heard of.