I had a question on pulse wave.

In the rules it says on draws lines of fire to all characters in range, however do any of them ahve to be targeted? Pulse wave ignores all powers etc so if a pw character moves into the middle of a bunch of stealth pieces, does it have to draw a line of fire to one of them in order to make the attack or is it more like quake where no one is really targeted?

Pulsewave ignores stealth, if that's what you are getting at.

does pw ignore team abilities that replicate stealth?

Yup, Pulse wave ignores all team abilities so it would ignore the TAs that copy stealth

Pulse Wave ignores ALL powers and team abilities within half of the figure performing the Pulse Wave.

The figure performing Pulse Wave does not lose any powers or team abilties himself.