QUESTION ABOUT TRISTANA

After just looking around at some Tristana Guides,

I noticed this, and it really bothered me.

Rocket Jump Cost: 60 Mana Range: 900 Tristana fires at the ground to propel her to a distant location, dealing damage and slowing surrounding units for a brief period where she lands. Tristana launches herself to target location, dealing 60/110/160/210/260 (+50% Ability Power) Magic Damage and slowing surrounding enemies by 60% for 1/1.5/2/2.5/3 seconds.Kills, Assists, and max stack Explosive Charge detonations on Champions reset Rocket Jump's cooldown.

Explosive Charge Cost: 70/75/80/85/90 Mana Range: 550 When Tristana kills a unit, her cannonballs burst into shrapnel, dealing damage to surrounding enemies. Can be activated to place a bomb on a target enemy that explodes after a short duration dealing damage to surrounding units. Passive: Enemies explode when slain by Tristana's basic attacks, dealing 50/75/100/125/150 (+25% Ability Power) Magic Damage to nearby enemies. Active: Places a bomb on an enemy or turret that explodes after 4 seconds, dealing 60/70/80/90/100 (+0) (+50% Ability Power) Physical Damage. Each attack and ability charges the bomb's damage by +30%.At 4 charges, the bomb explodes immediately. The detonation radius is twice as large if used on a turret.

Buster Shot Cost: 100 Mana Range: 550 Tristana loads a massive cannonball into her weapon and fires it at an enemy unit. This deals Magic Damage and knocks the target back. If the target is carrying the Explosive Charge bomb, the bomb detonation radius is doubled. Tristana fires a massive cannonball at an enemy unit. This deals 300/400/500 (+100% Ability Power) Magic Damage and knocks surrounding units back 600/800/1000 distance.

I understand that Tristana is a AD Carry, but if she gets all these buffs from AP, why doesn't she do that? :O