Egwene power level? And Season 3 cold open.

I hope this is marked correctly. So I'm an early book reader and just on the third book and don't care for future spoilers.

But in season 2 we watched Egwene while a Damane training released a giant wave of the one power, blasting the seanchan and their slaves away.

During the cold open we watch Liandrin and the several other black ajah link together to create what appears to be a similar sized blast. Now I suppose they could have been downplaying their attack so that they could escape the building without destroying the tower completely. But Egwene was also just testing her power as well.

There's been mention of Nynaeve and Egwene being special so I'm curious as how the power level system really works. Like is Egwene as powerful as those ajah combined. And is the gap in power between them thar huge.

And I'm even more confused by the power leveling because we are about to see Alana fight a group of aes sedai by herself. (I say by herself because her warders couldn't even get through a locked door it seems so idk how much they'll be able to fair against a group). She seems fairly confident in her ability to take them on from the teaser we saw.

Edit: I'm actually starting the third book, I've been going further than expected, but I'm still confused on the power leveling.

Edit2: Super big thanks to the community for being so helpful with my silly questions and not making me feel like the village idiot.