In addition to absorption, bubbles have other ways of attacking each other via
the base token
You can think of $BBL as an additional type of mass that can be absorbed by
bubbles. When a bubble absorbs $BBL you will see its $BBL value go up.Once $BBL is absorbed by a bubble it can be emitted as a powerful weapon. When it hits an opposing bubble, it causes a puncture and forces it to leak smaller bubbles.However, it also acts as a shield to prevent punctures from $BBL attacks.
EP evens the playing field allowing smaller bubbles to launch attacks on bigger ones.