Yes these are 0E stats. 5D10 damage is RAW for the pulse rifle in the PSG.
Hugo is a full body cyborg, and meant to be extremely dangerous in combat. However, his stats are run of the mill for 0e; almost identical to those of Cutter from APOF in fact.
It's his abilities which make him insane. Taking an extra action and having friendlies on his side act first (a result of his Erudicine boosted intellect, see the tactics/command skill in the PSG for context) that make him an enemy your crew absolutely should not try to fight without great planning.
That said, he can still be ambushed and with enough flame throwers/combat shotguns/smart rifles he can be taken down quickly.
I've been running a campaign with characters who are about level 7. They've beaten some pretty beefy bosses including The Avatar of Caliban, and Jealousy of Caliban (APOF) which are absolutely horrific.
That said, once I get my hands on a copy of the 1E rules I'll be updating all my work. A new version will release to match the new combat rules and scale Hugo for that game.
Don't expect Hugo to get any easier though.
EDIT: It's worth pointing out that Hugo's biggest vulnerability is Erudicine itself. He has a physical dependance on it and if your players ham string his access he'll break down pretty quickly.