Neither. It had a few 'new' weapons which for the most part were taken from weapons people had created in the modding community. You can still find a video of a Halo 2 BR that was modified into an 'assault rifle', which looks and acts almost exactly like the SAW. Boltshot? We did that with plasma pistol and shotgun burst in Halo 2 as well. Light Rifle? Bungie did that first, with the Halo 2 prototype BR (single precision shot while zoomed, burst fire less damage less accuracy etc. while unzoomed).
So you're basically disregarding every new weapon on the basis that similar weapons existed among thousands of weapon mods made in the last 12 years of halo?
Alright.