1 player versus 1 player. Half my skills control one piece, half my skills control the other. Kill the one, Summoner is left with half their skills left (unless you let them rez it, which you'd have to be braindead to do).
This is how pet classes generally work. It ain't rocket science, and it certainly isn't 2v1.
On a side note, I've seen two types of players in Arena chat. There's the ones that cry OP, and the ones that look for spars vs their hardest class to get better. Seems most of the people in this thread belong to the former.