We don't really know how effective these measures are. So these measures seem to be a matter of how we feel about it, rather than its effectiveness.
ご質問ありがとうございます。
"We don't really know how effective these measures are."＝「私達はこれらの対策がどれほど効果的なのか本当は分かりません。」
"So these measures seem to be a matter of how we feel about it"＝「なので、これらの対策は私達がそれに関してどう感じているかについてであり」
"rather than its effectiveness."＝「実際の効果よりも。」
アメリカ合衆国 
