I definitely felt my exams were harder this year, but I put that down to the jump from AS to A2 to be honest. Especially physics, which has led to me feeling like I missed the essential A I need for my firm. I don't know about AS exams being harder than last year, though I resat a chemistry exam from last year that I feel went much better, but had I been AS, I'd have found it difficult.
It wouldn't surprise me if overall grades were down a bit this year with the January exam cut, but I don't think it's gonna be a dramatic drop at all. I resat two of my three Jan exams last summer so I essentially did almost all of mine in the summer last year anyway. I know people who have sat 10-15 exams this summer and it's a lot to revise, I can imagine that juggling all of those wasn't easy at all. I don't think the lack of Jan exams this year has had as big an effect as some think though. We'll see when the results come out, anyway. Best of luck, all.