What did you see Elizabeth do to consider her a top tier character
Let's list the feats we have already...
In her current form...
1.She's perpetually healed entire armies without breaking a sweat and without actually touching them for a significant portion of time
2. She's held off and knocked back a guy with 3 commandments inside of him going berserk
3.She's completely dispelled Zeldris's cursed magic enhanced by the DK on Merlin
4. She's completely reversed Melascula's venom's effect with a single spell
5. She's completely brushed aside Estamael's black hound attack like it was nothing with Ark of Jonah despite it having the offensive capability to burn king, diane and everyone with the rest of the squad to ash(without diane's quick thinking to burrow under ground)
6.She's rendered Melascula completely inert due to taking the entirety of hundreds of years of dark miasma from her body with a single spell
7.She's made an Ark of light so powerful she was able to injure Assault Mode Mel as well as knock him back and daze him for a time(we can also assume she was not intending to seriously harm him here)
8. She's been noted as having strong enough offensive magic power to leave no demon unharmed who was struck by her attacks, commandment or not
9. (In her goddess form) made a majority of the demonic army up and leave just by casually persuading them
10. (in her goddess form) pushed the archangels and the 10c back just by activating her power
11. (in her goddess form) managed to hold down two indura enhanced commandments for a time and managed to actually revert them(with help)
Now what are her low points?
1. She needed help to subdue the two indura
2. She was eventually overwhelmed by 3 commandments level Estarossa
3. (in her goddess form) She got knocked to the ground by Derieri
4. Maelsterossa broke out of her Ark despite the two archangels saying that it should not have been possible
When we put them all together, i feel like her feats are more than enough to conclude that Elizabeth at the very least has the feats of being an archangel level existence in terms of magical ability, whether that is offensive or defensive, while leaving her open to show stronger feats in the future. I believe her durability is likely to be very low however.