I don't think I'm as much a vet as Kail or any of them, but I've completed all the DMC games on the highest difficulties before.
This game... look, it's a decent action game. Not bad, but nothing to write home about. If you needed something to pass the time until a good game came out, by all means get this game for a cheap price.
As a DMC game? No. It's not even close to DMC. Hell, the fact that this might replace DMC is just downright depressing. This game is a downgrade in some of the most crucial areas of DMC.
As an action game: 7/10. Not bad, but nowhere near the best.