The teachings of Arminius were actually not too different from TULIP (in certain aspects). People generally (and erroneously believe) that those five articles of Remonstrance teach loss of salvation as a firm belief. But the actual wording is different:I don't even know what Arminius taught.
...But whether they are capable, through negligence, of forsaking again the first beginning of their life in Christ, of again returning to this present evil world, of turning away from the holy doctrine which was delivered them, of losing a good conscience, of neglecting grace, that must be more particularly determined out of the Holy Scripture, before we ourselves can teach it with the full confidence of our mind."