Yeah that Neomax damage is little like crazy but it is the only unblockable so called command grab of his. I see the experts use them sparingly against block happy opponents once in a while a least to get some damage.
Other than that offensively, he has to resort offensively(and abuse) with his limited block strings in order to guard crush turtlers. But frankly to say his block strings do very little impact on the opponent's guard bar as it will take quite a while to guard crush . But he doesn't have much choices due to his limited moves and mixups, therefore if somehow or another if the clock is ticking a few seconds before time out and your opponent is leading by a bit more health and starts blocking all the way ( even if his health is so much more depending on your judgement whether you want to conserve stocks or not for the next round) , just do it.
You have no other choice cuz if you were to do block strings or walk towards and throw him , it doesn't have much effect since he is in blocking mode and he has way more health than you. So do the neomax!
If it is your last character with a few seconds on the clock , don't hesitate to do the NEOMAX as this is the ONLY AVAILABLE option to do the maximum damage on a very short space of time against A VERY BLOCK HAPPY opponent .
Duolon is not a grappler nor he has a normal command grab of his own, yes you may complain that his NEOMAX is very useless on the damage scale, but you will be surprise that even the experts will be caught in it once in a while or from time to time.