A few things. We say that the Mesora and Torah left Eretz Yisroel and went to Bavel, so we pasken like the Bavli and not the Yerushalmi. There actually is a lack of meforshim, very few rishonim compared to Bavli. It’s far more difficult to understand, often the meforshim will argue as to whether a sentence is a kashe or teretz.
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