No.
Incursion: A sudden invasion or attack; an act of entering a place or area that is controlled by an enemy.
Just yanking your chain here Wes but err...
Raid: a rapid surprise attack on an enemy by troops, aircraft, or other armed forces.
"a bombing raid"
synonyms: surprise attack, hit-and-run raid, tip-and-run raid, assault, descent, blitz, incursion, foray, sortie;
Obviously Matt is being hugely dramatic but, the two words, used as a noun, are basically interchangeable.
It's all good though, horde mode with a boss sounds fun to me and fuck, I don't even know what defines a raid in gaming terms anyway!
I'd just like some group and some individual co-op mechanics wound into something a little challenging but ultimately fun. Some of the heist stuff in GTAO for example was great fun in a good group. I'd expect Incursions to be more compelx and difficult than those but as a base reference for me they have a little light strategy which can be employed here and there but not so much that it feels all mil-sim. I like that in most cases they can also be brute forced for less coordinated groups if necessary. A little something for e'rybody.
I doubt I'll get to play them though for a while or indeed in the same way I played heists (fresh, no spoilers) as most of the folk who I planned to play this with have either dropped it for various reasons or not even got it yet. Combine that with not even being level 30 yet and I think it's fair to say my opinion is moot.