How much does, Power, Agility and Strength affect a pets, ex. Pierce, Resist or Damage?
In order to get the most out of a pet's raw number talents like resists or damage, their base stats (Power, Strength, Agility, etc.) need to be as close to 250 as possible.
If all of the stats that influence a talent are 235 or higher, the pet will develop 100% of the talent's potential. Spell Proof, for example, will reach 10%.
If one of the stats is 230 or lower, the Spell Proof talent will only reach 9%. If it's below 210, you're looking at 8%.
Looking at damage talents, a similar tier exists. To get the most out of a Dealer talent, you need all damage-influence stats (Strength, Will, Power) to be 235 or higher. Key stats at 225 or higher will get you your 6% from a Giver talent, but only 8% from the Dealer.