Let's ignore their feats before Urek's complete focus(even though we shouldn't).
Aubryon took one punch then immediately transformed after this. Urek is serious there, obviously everyone can say that his output is far superior to Mago's tiny amount.
It probably means that he would have died from the next attack in base.
Then there is this:
In base, Aubryon's fingers got broken by Urek, now he is parrying it.
He takes another punch after and Emperor is tagging Urek.
Urek then uses another powerful Light attack(clearly the strongest attack so far). Those who were complaining too much about the lack of environmental destruction couldn't complain about that.
What happens after this?
Emperor didn't disappear. He is still alive! Wow! Even attacking Urek and parries to strikes from the latter before finally dying to Urek's Genki Dama.
How is Aubryon after this?
Looks like he took some massive damage! Surely this guy wouldn't be able to resist Mago's attacks! I guess the vines would pierce him even. Same for Emperor!