How does というと work here?


The following is an excerpt from a dialogue between me and my language
partner. For full context, I attach the full block about the topic "Your name
(anime)" we were talking about at that point:

>
> 「君の名は」は、DVDを買って、家で観ました。海外での「ジブリアニメ」の定義はよくわかりませんが、日本で「ジブリ映画」というと、スタジオジブリが製作したアニメ映画のことで、その数はそれほど多くはありません。  
>  <http://nendai-ryuukou.com/article/030.html>
>
> でも「君の名は」は日本でもとても評判がよく、私もよくできていると思いました。ratwimps
> の歌を効果的に使い、テンポよく進んでいくのが良かったですね。  
>
> アンドレアスさんは字幕で観たのですか。私は、この映画では日本語の特性がよく表れていると思いました。男の子の一人称は「オレ」、女の子を呼ぶときの二人称は「おまえ」ですが、女の子の一人称は「私」、男の子を呼ぶときの二人称は「あなた」です。入れ替わっているとき、もちろん声や仕草でも区別がつきますが、どの人称を使うかでもすぐにわかるのです。画面に顔が映っていないときも同じです。  
>  外見が女の子でも、「オレ・・・」とつぶやいたら、中身は男の子ですよね。  
>  人称について話すと長くなるので、ここでやめておきます。

The sentence in question (Here she responded to my personal experience with
the anime "your name", because I told her that I first thought it was a ghibli
anime due to the high quality of the animation.):

>
> 「君の名は」は、DVDを買って、家で観ました。海外での「ジブリアニメ」の定義はよくわかりませんが、日本で「ジブリ映画」というと、スタジオジブリが製作したアニメ映画のことで、その数はそれほど多くはありません。  
>  <http://nendai-ryuukou.com/article/030.html>

My attempt at translation:

> "Having bought 'your name' as a DVD, I watched it at home. I don't know the
> defintion of 'ghibli anime' in foreign countries, but in japan, speaking of
> ghibli anime, out of the anime which studio ghibli has made, the
> amount/number isn't many to that extent."

So, I'm very confused about there being the term 'ghibli anime' and the phrase
'movie which studio ghibli has produced' in the same sentence ^^ Following the
description of というと [here](http://japanesetest4you.com/flashcard/learn-
jlpt-n3-grammar-%E3%81%A8%E3%81%84%E3%81%86%E3%81%A8%E3%81%A8%E3%81%84%E3%81%88%E3%81%B0%E3%81%A8%E3%81%84%E3%81%A3%E3%81%9F%E3%82%89-toiuto-
toieba-toittara/) I assumed that the sentence was built like that to introduce
the term 'ghible anime' first, and then explain that the number of anime
produced by studio ghibli isn't very high.

I also had problems translating のことで. I basically used the meaning of の中で but
it doesnt seem to fit. Furthermore, the way I translated それほど多く is supposed to
mean "(there are) not that many", but I did it in this very obstructed way to
show that I'm very skeptical about this interpretation. I did not find それほど多く
as an entry on jisho as a set phrase, so I put put it together from its
isolated parts.




> I assumed that the sentence was built like that to introduce the term
> 'ghible anime' first, and then explain that the number of anime produced by
> studio ghibli isn't very high.

I think your understanding is correct.

The というと literally means "If you say~~", and ～のことで (で is the continuative form
of the copula だ・です) means "refers to~~".

日本でXXというと、YYのことだ/です。  
= _lit._ In Japan, if you say XX, it refers to YY.  
→ In Japan, XX refers to YY.

「それほど～～ない」 means _lit._ "not ~~ to that extent" → "not so~~" "not very~~".  
So 「それほど多くありません」 means "~~is not that many" "the number is not so large".

> 日本で「ジブリ映画」というと、スタジオジブリが製作したアニメ映画のことで、その数はそれほど多くはありません。

"In Japan, 'Ghibli films' refers to the anime films created by Studio Ghibli,
and its number is not so large (i.e. there aren't that many of them)."




> I assumed that the sentence was built like that to introduce the term
> 'ghible anime' first, and then explain that the number of anime produced by
> studio ghibli isn't very high.

I think your understanding is correct.

The というと literally means "If you say~~", and ～のことで (で is the continuative form
of the copula だ・です) means "refers to~~".

日本でXXというと、YYのことだ/です。  
= _lit._ In Japan, if you say XX, it refers to YY.  
→ In Japan, XX refers to YY.

「それほど～～ない」 means _lit._ "not ~~ to that extent" → "not so~~" "not very~~".  
So 「それほど多くありません」 means "~~is not that many" "the number is not so large".

> 日本で「ジブリ映画」というと、スタジオジブリが製作したアニメ映画のことで、その数はそれほど多くはありません。

"In Japan, 'Ghibli films' refers to the anime films created by Studio Ghibli,
and its number is not so large (i.e. there aren't that many of them)."

