"unrivalled level" is correct and usable in written English.
You can use it to describe something that is on a higher level than anything else. For example, "The musician achieved an unrivalled level of skill and fame."
Among Afghan provincial governors, he enjoys an unrivalled degree of autonomy.
Furthermore, it is shown that the proposed (multi- iris fuzzy vault schemulti- irisunrivalled security levels in comparison to fuzzy vaultschemes obtainer biometric characteristics.
The strength in depth in Spain is unrivalled at club level at the moment and it is a surprise, then, to see that La Liga will only be the fifth most represented league at Euro 2016, pipped to fourth place by the Turkish Super Lig, a reflection of how the money on offer in Turkey is making it more attractive to foreign players.
Offering this level of unrivalled flexibility creates challenges: I have had to become an expert on fashion and cosmetics as well as home goods, because my clients can and will redeem the value of their gift list anywhere in our store.
"As North Koreans, you've come to expect a level of mercurial brutality unrivalled by any other country on the planet," the statement continued.
XPRESIDENT™ is immatics' unique and proprietary technology platform, which allows to identify large numbers of TUMAPs directly from primary tumor tissue, down to a femtomolar level – a so far unrivalled sensitivity level.
Her power and presence on stage is unrivalled.
Outside of the US police the level of fear and paranoia as a black American is unrivalled here and that is what Samuel L Jackson meant.
"The fee structure is a reflection of the extraordinarily high levels of staff contact hours that the students will benefit from, the unrivalled access to industry that they will receive, the almost bespoke nature of each student's learning experience with us and the enormous financial investment that Condé Nast is putting into the project," she said.
"The Turn of the Screw" provides an unrivalled opportunity to read in a bifurcated fashion, to operate paragraph by paragraph on two levels.
