simple. Sunni are lovers of the sahaba, the wives of the Prophet SAW, the awliyaa of Allah and sunni show what love for the Prophet SAW is ..
and the rest be it wahabbi, dewbandi, shia, tablighi etc etc .. they all either oppose the sahaba, they defame the wives of the Prophet SAW, don not accept that awliya can exist… every other sect has an enmity one way or the other towards Islam or the ppl of Islam.