He very explicitly says "lesser of two evils". It's really not that difficulty to find a portfolio of issues that would concern a European liberal (in the European meaning of the word) where the Republican party broadly scores better than the Democratic party.
eru's statement was "If I was living in the US, I'd probably vote mostly Republican". In the context of the discussion, I interpret that, quite reasonably I think, as broad agreement with what he perceived to be Republican policies.
My response was intended simply to point out to him that it is highly unlikely he truly has such broad agreement with Republicans, particularly in the context of other statements, and in the (hidden) context of other Europeans I've encountered who thought they would be Republicans in the US, and were quite surprised when they learned the modern state of the Republican party, which is far outside mainstream European politics.