how much of a difference will it make if i drop to IB certificate?

<p>im currently a junior and an ib diploma candidate. i want to drop to ib certificate and i was wondering how much of a difference this would make for UC's, especially ucsd and ucla. i've heard from many people that uc's dont really distinguish diploma from certificate and that they mostly look at gpa and sat scores. if i drop to certificate, my gpa would be potentially higher. so what should i do? drop to certificate and have a higher gpa than that of now(4.1) or stay in diploma and risk having my gpa drop?</p>