The first is a categorical rejection of corporate sovereignty in TTIP, the second is a rejection of certain kinds of ISDS, but not the idea itself. Clearly, then, the difference is significant: in the first case, S&D would vote against TAFTA/TTIP if it contains ISDS, while in the second, it might tolerate corporate sovereignty if certain conditions are met, and vote in favor of TTIP. That second position could well become that of the European Parliament itself.