Comp is not particularily well vented. I’ve got a down-o-matic rather than an archi-enduro, the main venting round the top is teh same though and tbh though it’s about as well vented as it gets, it’s still properly unpleasant for allround riding in. If you have ideas about riding up hills with it on, personally I would say don’t- it’s bad enough on pedally descents ime.
I am not fast, so, take it with that disclaimer but for enduro racing I wear my Fox Striker. I’ve worn full face for enduro before, and it is rubbish… And the distraction from the heat and sweat is enough that I’m less safe in mine than I am while comfortable in an open face. I tried it again recently for an event with mandatory full face, and I ended up just not even bothering doing the raceday as it totally ruined it for me.
But as ever ymmv. And if you want a vented full face you won’t beat the archi.