Nasuverse powerscaling issues

Hi, I have some questions regarding the ratings of the Nasuverse servants and top-tiers, namely how they were determined and how consistent they are.

This is not really a proposal for any particular rating being applied but rather an examination and potentially a reconsideration of the current ones with the help of more knowledgeable people than me.

Servant base stats are, for some reason, seemingly scaled to the same level - Large Island level+, despite Nasu's intent being for there to be significant differences in them due to the parameter system grading them from E rank (10 points) to A rank (50 points). Those parameters have a bunch of inconsistencies with actual fights, I know, but they show that the author clearly doesn't intend for all servant physicals to be on the same level. So why are they all jumbled together when there are up to 5x differences in strength (not even counting "+" modifiers)? I suggest we accept the parameters where there isn't a contradiction (like Kojirou having C rank strength and being weaker than Artoria with B rank strength) while ignoring them when there is a contradiction (like Archer Emiya and Cu Chulainn being stated to be equal in strength despite Emiya's being D rank while Cu's is B rank). This isn't a tier proposition, just a scaling methodology.

The Nasuverse seems to be one of those verses where weaker characters can clash swords with stronger characters for some time as long as they have superior skill and/or speed, so they don't have to be on the same tier. Like Kojirou vs Artoria.

(Also someone please elaborate on why base servant stats are put at Large Island level+ specifically since I wasn't able to see an explanation anywhere)

As for the god tiers like Sefar and Amaterasu, they cannot be Complex Multiversal because Nasu has given us finite linear power levels showing how they compare to servants.

Crest of the Wandering Star
A skill unique to Titan Altera and the key skill in her character design.
It allows her to take on a giant form in order to destroy civilization.
This is a passive skill that allows Altera to absorb the lives, creations, and concepts she destroys as spiritron-information, making her grow even larger. It is not a skill that she can remove of her own volition.
Her HP increases by an order of magnitude2 when she absorbs the same amount of mana as her current HP.
When her body reaches a size that is twice as large as her previous proportions (at 16, 32, 64,128, 256, 512, and 1024 meters), all her parameters increase by one level as she transitions to the next part of her titan adjustment.
(For example, her Strength is A-rank, so if you think of it as 150 points, adding one level at A+ rank would double that number, putting it at 300 points.)
And if the Titan adjustment is added to that, 300 points at the first stage would become 3,000 at the second stage, 30,000 at the third stage, and so on. At the seventh stage, it would be 300,000,000.
This is a Stellar-Class energy level, approaching that of the Golden White Face’s nine-tailed form (387,420,489).
This is just some extra trivia, but the “Crest of the Star” skill possessed by the Altera in Fate/Grand Order is missing one character.

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Servants with A rank strength have a power level of 150 which is half of Sefar's first stage (300). Sefar's power level then increases linearly by 10x at each stage until reaching 300 million at her 7th stage. Amaterasu is not far off from that at 387 million.

So why are Sefar and Amaterasu Complex Multiverse level while Servants, whose A rank strength holders are exactly 2 million times weaker than Sefar linearly, are Large Island level+?

Also why are top tiers Immeasurable speed when Zeus, who himself is Immeasurable speed (due to being a God I guess?), stated that his journey throughout space was a very long one?

Wodime: You know, now that you mention it, you never did tell me the story of why you all crossed the sea of stars.

Zeus: ...I suppose I haven't, have I? It was a very, very long journey.

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I get that it comes from Amaterasu being able to pull Hakuno across time due to her not being as bound by the time axis as humans are, but isn't that just time travel/time manipulation hax instead of immeasurable speed?
Also Zeus was fought in Olympus by servants who were not immeasurable speed.

I don't have a direct answer to any of your questions, but what I can say is that Nasuverse is currently under heavy revisions and pretty much all of the pages have the Outdated template on them (including the ones you talked about), so I don't think you should be surprised if there are many issues with the profiles.

In other words, just wait. The Nasuverse cosmology staff thread hasn't even concluded yet, which is why further revisions have yet to occur. If you wish to know more, consider going to the Nasuverse general discussion thread and asking the people there about the situation.