Well CSA have only around 25 airplanes so an alliance made of huge airlines like Delta, Air France, Alitalia, Korean and so on would not be really hit by a small strike especially considering the fact that only around half of CSA pilots are part of ALPA.
Anyway they should be asking at least for a 100% increase because right now a Capt. makes around 1600$ US!!!!
And don't give me the usual story of the lower cost of living in that country because if you want to buy a mobile phone or a car you pay the same as in Germany...beer however is much cheaper of course...