[quote=@KoL]
<Snipped quote by Sublimation>

Her stats come from a huge regional and fame bonus from being summoned within the premisses of her old empire (mind that Saber was sent to the GM before the OOC was made) and the fact that she's supposed to be an actually extremely important historic figure, so basically everyone in the world knows about her. Also she has a personal skill that boosts her stats even further. And, actually ++ means triple stats, not quadruple only her NP (originally A+) is quadrupled because of the bonus.

[/quote]
Mmmm, your acting as if tripled stats isn't extremely powerful to the point of it being ludicrous here, no offense. 

Let's take a look at Vlad III here when he was summoned in Romania, the literal place he lived in and defended in his life. He gains the maximum amount of fame possible for a heroic spirit turned servant as explicitly stated by Apocrypha. Here are his stats, mind you, which are also likely buffed by Demonic Defender of the State.

Strength: B
Endurance: B
Agility: A
Magic: A
Luck: D
Noble Phantasm: A

Here are his stats when he is forced out of homeland advantage.
STR: C
CON: C
AGI: B
MGI: A
LCK: D
Noble Phantasm: B

As you can see, his stats do not triple or anything. They just rank up.

[quote=@KoL]
There's not a single place that says that you have to have dragon blood to have A-rank magic resistance. Arthuria's just like that because it really can't go into EX, since only the Ruler class is outright immune to the Five Magics, see Joan of Arc's stats for an example. In fact, the base container of the Saber class has B-rank Magic Resistance, so a Saber can go bellow it unless she is under some curse, meaning that Sabers can either or A rank.
[/quote]

A rank magic resistance is exceptionally rare for a reason. Not everyone has the luxury of no selling Casters from the Age of Gods without a second thought. Dragon's Blood/Phantasmal Pedigree is a way of attaining this. The more common way of getting this is by having strong Faith, like Joan of Arc, Saint George, etc.  Christian protections, particularly those regarding saints, grant A rank MR. However without extenuating circumstances, A rank MR should not be possible, and I have no idea where the "cannot go below class specifications" thing comes from when it doesn't apply to parameters and other classes' skills either.