Bog standard, I reckon the L494 is anywhere between 20-10% less able than the Puma.
If the new Defender is anywhere between 10-20% better than the L494 - which, by all accounts it is with the better approach/departure angles & ground clearance - then yes, it will be just as good off-road, if not better.
I'm busy uploading my video to YouTube, will post it once it's processed. You will see how I have to take different lines to the Defenders, so you obviously have to drive it in a different way to a Defender.