Nasrallah and wahhabiyyah

I never trust Hizbullah's stance against Saudi regime. They attacked the regime in the past and later--presumably at the instruction of Iranian regime--made up and reconciled and deputy leader of Hizbullah asked the Saudi embassy in Beirut for visas for his brother Hajj business.  Weeks ago, Nasrallah said that Wahhabiyyah is "worse than Israel".  I hate when people invoke Israel in their intra-Arab attacks (like Syrian rebels often invoke "worse than Israel" about the Syrian regime). What are such analogies meant to convey?  Now both sides use it and I condemn such usage always.