Мужики, заканчивайте шашками махать!
Рекомендую подробно изучить Unicode Collation Algorithm (UCA) и обратите внимание на пункт "Numbers" раздела "1.4 Customization" , который гласит:
" Numbers . A customization may be desired to allow sorting numbers in numeric order. If strings including numbers are merely sorted alphabetically, the string “A-10” comes before the string “A-2”, which is often not desired. This behavior can be customized, but it is complicated by ambiguities in recognizing numbers within strings (because they may be formatted according to different language conventions). Once each number is recognized, it can be preprocessed to convert it into a format that allows for correct numeric sorting, such as a textual version of the IEEE numeric format."

Что уж говорить о надстрочном и подстрочном начертании?... В FirebirdSQL предусмотрено управление всеми возможностями кастомизации упорядочений?

По поводу superscript и subscript: "10.2 Tertiary Weight Table"
" The <compat> weight 0x0004 is given to characters that do not have more specific decomposition types. It includes superscripted and subscripted combining letters, for example U+0365 COMBINING LATIN SMALL LETTER I and U+1DCA COMBINING LATIN SMALL LETTER R BELOW. These combining letters occur in abbreviations in Medieval manuscript traditions. "