I've ridden the new AAA version and you're right Billy - it's not massively more challenging than the regular version (that's to say it makes a reasonably challenging ride already into a slightly more challenging one - but it's not the most insane ride out there, there are plenty of faster, flatter parts along the way).
I was never a fan of the ride out to Marlow on the original - so the AAA version is actually rather nicer. There's only one stiff climb really, just out of High Wycombe. The rest of the new ascent is fairly mild.
Of course, you're then into all the old favourites - Streatley etc.
So, really, other than those who want to blast around the old route in 8 hours (bypassing the hills on the last section), there's no excuse for not riding the hillier version and collecting those 3 lovely AAA points to start off the season.