If he chooses to save her & kill himself, he wins!

A tiny needle comes out of the button & drugs him with a sedative, but before it fully takes effect, he has to watch her die:

The wires around her tighten, ripping her to pieces until she's just a pile of bloody meat chunks. Before she dies, Jigsaw tells her that the man wanted to save her, but he couldn't allow her to actually live after that, because she wouldn't learn her lesson from it.

Then, the man passes out from the drug. He wakes up in rags in a sweatshop that produces his companies own product. He tries to tell people he's actually the ceo, but finds out his vocal chords were cut.