Nexus should be better if you pick the appropriate stats, but it should not have a stat advantage over High Allagan if the intent was that the Nexus is a separate line meant for players who aren't into Coil. I think both should have the same capacity, like if a High Allagan Spear has 32 Determination, it's appropriate it should have 46 Crit like the Nexus version can attain. Seniority has no real basis to state that one must be blatantly superior to the other only in specific instances: I think people are forgetting that the High Allagan Staff, for example, has identical stat heights to its Nexus variant (72 points total), but in the case of a High Allagan with Determination, the stat total goes up to 64, whereas a Nexus still acquires the normal 72 points.
Neither should be blatantly weaker or stronger than the other, but in specific instances the Nexus trumps the High Allagan, where this isn't the case everywhere. Those're discrepancies, and I'm curious whether these are by design, or whether they are an oversight.
To those who are arguing the time taken to acquire either:
Please do not derail the thread with something irrelevant. The fact is that in three specific instances, High Allagan gear has a smaller stat point total than a Nexus can acquire, and I'm curious why this is. It's OK if one is better than the other (and I'd argue Nexus is better regardless, due to stat flexibility), but there should not be a case where one is better simply due to a sheer advantage in capacity.