... 反対に => on the contrary N3
Compare
に対して => towards; against; regarding; in contrast with ~​ N3
のに対して => towards; against; regarding; in contrast with ~ N2
…と (は) はんたい (反対)に => opposition; resistance; antagonism; objection; dissent N3
Compare
いささか => a bit N3
Evaluate
に[対「たい」]して/に[対「たい」]しては => In response to (topic) A, in regards to A, considering A, in contrast to A N2
Reason, Result, Response
に[対「たい」]して/に[対「たい」]しては => In response to (topic) A, in regards to A, considering A, in contrast to A N3
Reason, Result, Response
さ => -ness N4
さえ/にさえ/でさえ => Even N3
Not only, Not even
さあ => well N3
Suggestion
さえ/でさえ => even; so much as; not even N3
...さ => Sentence-ending particle N3
Exclamatory