Within the same strain, each seed will showcase different traits from each parent. Just like how it works in humans. The pot size may have a little to do with the plant size differences if you encounter any, and that's just due to the plant in the bigger pot having a bigger root system meaning it can take in more nutrients and grow bigger faster. All the other changes 100% have to do with the genetics of the plant. ! smells sweeter than the other one because it picked up the genetics from one parent to create the terps that create that sweet smell and the other one didn't. When growing multiple seeds from 1 strain you will get plants that are all similar within reason, but yet all different as well.