Jackson either expresses no opinion, or the speakers agree. Jackson doesn’t comment on larger vs. smaller cars. You might read his statements as implicitly about the complaint that larger cars use more gas than smaller cars, in which case he shares Peraski’s view.

Jackson has no opinion. Jackson doesn’t strictly commit to the view that anything is hypocritical; he only says we shouldn’t withhold criticism even if that criticism is hypocritical. If you view his statements as acknowledging hypocrisy, then the speakers agree.

Jackson has no opinion. He doesn’t comment on small cars and pollution. If you view his statements as implicitly about the exact same situation Peraski discussed, then Jackson shares Peraski’s view about this.

This is a point of disagreement. Peraski believes one shouldn’t speak out against a practice that pollutes if it would reveal one’s own hypocrisy. Jackson believers one should speak out against that practice even if it reveals one’s own hypocrisy.

Neither expresses an opinion. Nobody comments on whether there are any moral differences between driving a larger car and driving a smaller car. There may or may not be moral differences unrelated to pollution.