Billy doesn't stop until he's halfway into the woods around the estate and well up a tree.
Intellectually, he knows Wolverine can track him...but at least here he'll get a good chance to catch his breath, maybe stop panicking long enough to think of a spell, any spell, to get the Avengers' resident berserker off his tail.
Then Teddy asks his question, and Billy looks at him like he's grown an extra head.
"You're joking. That's a joke, right?"
Right. Different reality. He doesn't know.
The thought that the Logan they saw might not be the same Wolverine he remembers doesn't quite penetrate his panicked mind. To Wiccan, Wolverine = witch-boy shish-kebab, and that's all there is to it.
"OK, look, I don't have a lot of time to explain, so this is the cliff notes version. I'm the son of the Scarlet Witch. On my home world, she killed half the Avengers by accident, and then wiped 90% of all mutants' powers off the face of the planet. And a couple of days ago, I lost control of my powers. 20 bad guys we Young Avengers were fighting...they all went into comas at the same time. And I don't remember doing it."
Billy's cloak ripples down his back, affected by how severely he's shuddering as he clings to the trunk of the tree.
"The Avengers took a vote, to decide what to do with me. Like they did with the Witch. Iron Man and Ms. Marvel wanted to keep me at the Mansion. Cap and Spider-Man wanted to help me, either by training me themselves or sending me to Xavier's. Wolverine...he didn't even take a second. He just popped his claws and glared at me...I've never been looked at like that. Not even by the bad guys. I knew he wanted me dead the second he gave me that look. And I'm not gonna give him the chance."