Hello, I have recently created a mythdactyl pet with pain giver myth giver spell defying and myth bringer. THe pet shows 6% on pain giver and myth giver and 9% on myth bringer. I have done certain calculations myself as well as used several online pet stat calculaters and even though my pet should have 10% myth damage it reald as 9% on my pets description.
What are your pets stats exactly? You could be rounding incorrectly. If you have pain, giver and dealer your pet should have 6+6+9 or 21%, saying it shows 10 is pretty unclear, is it just the dealer you are concerned with?
Pet talents that boost wizard stats are fractional, based on the pet's attributes. The game will use the correct actual value in combat, however the display values round to whole numbers. Don't worry about what the pet display shows. You will get the true damage and resist boosts, even if they don't look that way when you look at the pet.
Your 6 displayed is really 6-point-something. 9 displayed is really 9-point something. If your pet has triple damage talents and decent stats, you are probably getting about +22% to wizard stats.