The company is horrible. Bought a new gun from them, it came to me broken. Called them up and sent it back for repairs (my dime). They "fixed" it 3 weeks later and CHARGED ME FOR LABOR, PARTS AND RETURN SHIPPING ON A BRAND NEW GUN!!!! Got my gun back and guess what, it was still broken. Called them back and they said I should buy a different gun, no refund, no exchange, just buy another gun. BTW the guy said cockers were for dinosaurs on the phone when I asked about parts! ANS parts... deservers thier nickname.
To answer your question, there is a reason that ans cockers run cheap. They are ok.
Autocockers are not more accurate, I'm just more accurate when I shoot autocockers.