For seq2seq definitely. If you’re just trying to map words to words though it shouldn’t - as long as the contexts of the words are similar in each corpus.
Man - woman + queen should equal king in both corpora, etc etc.
Think what you would need to solve for would be an N dimensional affine transform from space 1 to space 2 that preserves those types of relationships.
Could definitely do that with a set of analogies in both languages but I’d bet a clever loss function could do it too without that.