べからざる => Cannot A N1
Potential, Possibility
~いざ~となると / いざ~となれば / いざ~となったら => When it comes to; in such a case; if that happens N1
Evaluate
とはくらべ[物「もの」]にならない => It's no match for A N1
Comparison/ Exchange
~べからざる => must not; should not; do not ~ N1
Confirm
ござる/ございます => Have~ N4
Honorifics
まんざらでもない => not so bad... N3
Evaluate
でござる/でございます => By, with… N4
Honorifics
ざる => B that doesn't/isn't A N1
Adjectival, Descriptions
ざるを得ない => cannot help (doing); have no choice but to ~ N2
まんざら…でもない/ではない => (not) altogether; (not) wholly N3
Evaluate
~ならいざしらず      => I don't know about … but; it may be possible for … but ~ ... N1
~いざとなると => when it comes to; in such a case; if that happens N1
Situation, case