When did I say it made them worse? The perimeter defense is where the Lakers are just flat out bad and Dwight doesn't help much there.
Is D12 an upgrade over Bynum? Yes he is but is really by that much? The Lakers were already a pretty good team inside so in honestly this trade doesn't help them that much granted Dwight can do a lot more on the offensive side of the ball with less touches and he is a better off ball player than Bynum but the issues that the Lakers had before are still there they lack offensive firepower, Kobe will still be jacking up 25+ shots a game, Nash will not fit in a Mike Brown offense, and Pau Gasol isn't getting any younger along with the rest of the Lakers. Pull your head out your ass and stop drinking the kool-aid.