Yeah, but that's only because characters in ESF have all been given a lamentable amount of health. True DBZ dynamics would dictate that characters can last a Hell of a lot longer before dying, which ZEQ2 us trying to replicate. Plus, EVM's blasts don't just get stronger, they get BIGGER, which is a misconception. In DBZ, the size of blasts save for ones that takes half your energy to do remains pretty constant. The main difference is the energy is more concentrated, and does more damage while not getting too much larger. Otherwise, all of Goku's blows as a Super Saiyan on Namek would have produced massive Spirit-Bomb size explosions every time; but the force was concentrated into a smaller area.
Really, I think the notion that you can't make a realistic and playabe DBZ game is horse****. If you've been over to the ZEQ2 forums, you'll see that they've been studying the exact dynamics of how things work in DBZ throughout their whole ordeal, and you'd be amazed at how mathematicaly they talk when explaining features. Meaning of course, that they're thinking everything through. They've busted their brains in to find a way to faithfully create a DBZ game while making the game totally playable, and if you ask me they've figured it out.
For multiplayer, I've also seen how they plan to set up some functions. One thing they've done is to set game servers so they have a timeline range. Basically, you could have the range of character powers and styles limited to say...Namek Saga until Perfect Cell Saga, or Perfect Cell Saga till end of Buu Saga, or any combination. Automatically that allows you to play in a server where the playing ground is evened between characters like Goku and Krillin, while the power level differences will not change.
The game is said to be played in a way similar to the series as well. Being able to learn how things react or understanding certain things in the game (basically having "SKILL" as opposed to strength) can make even a weak opponenet beat a powerful one who's perception of the game is bad. It's no longer "this guy's stronger so he'll win".
In a way actually, ESF has a similar mindset. The game is indeed lamentably set so the more powerful guys almost always win, but despite this, I've seen people powered up to insane levels get killed by someone a quarter their strength with proper melee, so you CAN'T tell me that balance in ESF accounts for too much when those scenarios apply.