"For the first time in years, West Bank residents who are asked about this in opinion polls claim that they are economically less well-off than the Gazans (though they are wrong)." This poll was apparently mis-read and mis-reported. The poll showed that for the first time satisfaction with economic conditions by residents in the West Bank was lower than satisfaction with economic conditions in Gaza. The polls DID NOT say that the West Bank residents see their situation as worse than that of Gazans.
from the article: Hamas has the upper hand in Gaza