I don't think any upgraded/enchanted swords can come close to it. Because if any did, there would be no point in raising and capping an ego 1-handed sword to 50 stats.
They will just need to raise up ego beyond level 50. It's a simple solution. Just a matter of time.
It means that this sword of elsinore will inevitably be made somewhat obsolete in much future generations.
If you are after the sword just because it's flaming or looks good, go ahead.
If you are after it for damage, I would advise anyone to think twice about it.
(Lots of examples. People always thought melee elves didn't have much potential. That's not true, it's a matter of time before they catch up. You'll be interested to know that there is a china contest designed two-handed sword, upgradable, enchantable, wieldable by elves, making melee elves even more possible. Released over here during a fishing event. It's the sword with a skull which many people said were not well designed.)