you forgot that not all animal pets are non burstable. There are the flowers that you can burst.

About eva bursting, I bursted her with def/def/def/mess/mess and Qlaya the same way just using coma o.o never tried with only 1 mess or 1 coma, so I don't know if it works or not, but in my opinion using only 1 the assistant skill will gain you much less exp x_____x

Xaolan's burst is a bit different what I heared from other, same as Sam's. Most of the ppl use wall/water shield when ally's hp is less then a certain amount. I think with only 1 assistant skill you won't get too much exp =S

Is this your own way of bursting, I mean your own experience? how much exp does get your pets which you burst this way?