が思ってるほど

as ... as you think

→ が
phrase Rare #31,893
as ... as you think Usually used with a negative expression to mean “not as ... as you think.” 思ってる is the casual form of 思っている, and the subject before が is the person whose opinion is being referred to.
JA: この仕事は君が思ってるほど難しくないよ。
EN: This job isn't as difficult as you think.

が思ってるほど悪くない

It's not as bad as you think.

お前が思ってるほど貧乏じゃないって

I'm not as broke as you think.

あなたが思ってるほど大変じゃないわよ

It's not as difficult as you think.

トムが思ってるほど悪いじゃないよ

Tom isn't as bad as you think.

トムあなたが思ってるほど若くない

Tom isn't as young as you think.