The absolute majority seems to be an anti-paralysis instrument, where the onus is on the Parliament to reject something put in motion by the Council. I think the the asymmetry is that a vote to trigger the urgency procedure only requires a simple majority, whereas a rejection of that same legislation requires absolute majority.
To my reading, this reinforces the idea that Parliament is designed to be more of a rubber stamp for the Council.
> Second reading
> 7. If, within three months of such communication, the European Parliament:
> (a) approves the Council's position at first reading or has not taken a decision, the act concerned shall be deemed to have been adopted in the wording which corresponds to the position of the Council;
> (b) rejects, by a majority of its component members, the Council's position at first reading, the proposed act shall be deemed not to have been adopted;
> (c) proposes, by a majority of its component members, amendments to the Council's position at first reading, the text thus amended shall be forwarded to the Council and to the Commission, which shall deliver an opinion on those amendments.