1 handed weapons 2 attacks 1 is with your off hand so the more extra attacks you get the more the 2 hander is impacted it prolonged combat dw will producer more net damage at low levels but raw weapon to weapon 2 hander hits harder. You wont notice it till level 5 when you get a 2nd base line attack even then its still pretty close but come level 11 the 2 hander starts to be more favored. Its actually a grievance a lot of dw players have with 5e is at high levels dw does not scale well. Extra attack does not apply to dwing.
