I'm glad that I was able to figure out the difference between these two ...
I'm glad I could understand how A differs from B.
「この2つの違いが知れてよかったです」は
I'm glad that I was able to figure out the difference between these two ...
I'm glad I could understand how A differs from B.
を使って言うと良いでしょう。
例:
I'm glad that I was able to figure out the difference between these two sentences.
「この2つの文の違いが知れてよかったです。」
figure out「理解する・わかる」
difference between these two ...「この2つの…の違い」
I'm glad I could understand how the past tense differs from the past perfect.
「過去形と過去完了の違いがわかってよかったです。」
how A differs from B で「A が B とどう違うか」
ご参考まで!