The problem with ULE is that you have to shift alignment from L to C and back to L+ in order to get 2 parts of the trinity.
Also corruption should not be a measure of difficulty in this case. You need to be extremely corrupted to enter chaos plane which is easily achieved.
At this point scrolls of corruption removal are easily obtained from guaranteed sources.
After this 2 such scrolls are enough to keep further corruption at bay and not turn into a purple j.
UCE are only marginally more difficult from ULE and only because Khelavaster does not summon the trident for chaotics.
Score difference is too vast to justify so little difference in difficulty.
As a side note, one of those ULE on UK server is mine and there is only one normal gate closer below me.
Last I checked, my char was #27. Everybody else below that, save for the single gate closer, is a char that died.
Most of the chars above are gate closers and there is even one failed archmage that starved without closing the gate.
This clearly shows that ULE score is still scaled very poorly, no matter if it was adjusted or not. If it was, then it's not enough by a large margin.