I suppose, if you think about it, Jangos jet pack was destroyed on kamino so they could have, if they wanted, have gone with anything. But it makes sense i suppose to have it the same as Bobas.
If im being picky, and i am,
They should have had Jango with the arena pack being destroyed on Kamino and then in the arena he has the colourful one we all know. That way when Jango dies, Boba inherits the helmet and the Jetpack.