OK, so I understand the Captains in Lisbon accepted a lower cost command, and now they are striking to bring their contract back to the company standard. The Pilots in the UK are saying "well you accepted the command with the lower remuneration therefore you should live by the sword and die by the sword".
Wonderful! now the company has achieved exactly what it wants, it has successfully "divided and conquered", that now opens the door to more and more out of seniority, lower cost bases.
I genuinely think that breaking your colleagues and friends strike in Lisbon will seriously backfire on all of you, you will all relinquish the only real power of collective bargaining which you have, Fools!!