no it's called airtight by jay sankey and i dont have it but im pretty sure that it is a totally different method of accomplishing the effect. Hope that helped.
Not a coincidence. Different effect. I'm not familiar with the method used in that video, but the effect is completely different from Pressure and I can also say so is the method. In this effect, the cards go into the balloon and a chosen card is pulled out which is pretty cool. With Pressure, a cell phone (or cards) are visually put inside the balloon and then shown inside. That's the entire effect.
So no, this is not a coincidence. Danny G and Dan W were not the first people to come up with balloon magic. Its been done before.