First, I wasn't referring to balancing the strength of a troop vs the defense. I was referring to balancing the # of upgrades, and what you have to spend e vs gold on.
PEKKAs 4 wouldn't be any stronger than max witches, or level 2 hounds w max balloons, or max valks, and I'm not even sure if I would personally use them, (I generally do a 2 part attack starting with GoWiWi + heroes to take out the queen, cc, and an air d, and then LavaLoonion for the rest of the base) but it's about having more viable options.
Right now in most cases I don't really see PEKKA 3 as a viable option when I can use level 4 golems and level 2 witches. PEKKA 4 might at least make strategies involving PEKKA a little more tempting, but like you said, even with level 4 PEKKA, GoWipe is still probably a 2 star strategy against higher TH9s, unless you're really good with it. And in most cases you'll still probably need to bring hogs or balloons for support.




