No one goes into a strike to gain money!
Given that (untill today) BA were unwilling to even talk about a settlement there seemed little scope fore manoever.
Even today BA are persuing a court action to prevent a strike!
Not exactly one sided is it?
Even allowing for "voter irregularity" cited by BA there was a majority of 7-1 in favour of strike. Given that a strike is intended to cause maximum inconvenience to the buisiness what better time to call it? Especially if it causes your bosses to sit down and talk!

My last point ....... would the CEO be willing to give up 30% of his 700K sallary (and the rest of the board)? ....... I thought not!