Sailor Moon Top Tier Feats Summarized

This is just power feats, not including some of the weaker supporting feats like Pharaoh 90 moving his galaxy and also avoiding things that are are ambiguously phrased in the original Japanese.

1: Princess Snow Kaguya can all of space frozen 
2: Sailor Saturn's power to release the Silence is many times things to the effect of the "annihilation of everything" and in the past even killed Sailor Pluto who exists in the spacetime corridor in the threshold between times an area outside spacetime without distance or direction showing that it wiped life all the way to outside spacetime
3: Nehelenia maintained her own mirror dimension called a parallel universe and is noted as having constellations within it 

All of these are far weaker compared to the Power of the Silver Crystal the ultimate power of the universe

4: The Silver Crystal bears the power to create from nothing. It is called the source of all energy, containing unfathomable endless energy. The one who wields it will become the ruler of all the universe. 
5: Consistent with this, Chaos planned to use the power of the Silver Crystal to form a new universe. 
6: The Energy created by the Silver Crystal is consistently said to distort spacetime. Once it's usage is noted to warp all of spacetime. The Kodansha translation is that it pierces to the far reaches of spacetime
7: This is consistent with how when Chibiusa, the future user of the Silver Crystal was turned evil by Wiseman, it caused a chaos in spacetime beyond any before though in fairness the original and the Kodansha translation are a bit more ambiguous

However these two are much weaker then the Lambda Power, the power of all the Sailor Crystals (1) (2) (3)

8: The Lambda Power, the ultimate power of the Cosmos Crystal's power is enough to restore the cosmos itself to it's static form and with a single burst reduce Conceptual Chaos down to infinitesimally small
9: The Collision of Usagi powered by the Lambda and Chaos was so strong that Usagi wondered if it had obliterated Chaos, the Cauldron, and everything else. 

10: Far in the future the Lambda Power using Sailor Cosmos will battle the reborn Chaos, Sailor Chaos. The devastation wrought by Sailor Chaos is so great not even Sailor Cosmos can restore it, which is impressive when you recall a single burst of the Lambda Power restored the static cosmos. Kodansha version

It is also notable that that if the Silver Crystal of the Past and the Future meet it will end the universe in paradox, though that may be due to simple nature of paradox rather then the power of the Silver Crystal per se.

Also if you're into that kind of thing, the Silver Crystal's power is called infinite like all the time in the manga (1) (2) (3) (4) (5) This is just some of the instances.